Yeah. Thanks, Mark, and I'm going to be on page 11, Remaining Performance Obligations, by segment and market. The robust demand for our services continued the trend we experienced in the final three quarters of 2022, into the first quarter of 2023. Total company Remaining Performance Obligations or RPOs at the end of the first quarter were almost $7.9 billion, up a little over $1.9 billion or 32% and over the March 2022 total of $5.95 billion, all but approximately $169 million of the $1.9 billion increase was organic. Additionally, first quarter project bookings were also strong with RPOs increasing $414 million or 5.5% in the first three months of 2023 from year-end 2022. With a 10.1% organic revenue growth, the continued RPO growth is a sign of strong underlying demand in our most resilient sectors. RPO growth was broad-based with each of our domestic reporting segments experiencing double-digit RPO growth in the first quarter versus the first quarter in the year ago period. Further, each of these four business segments saw RPOs increase in the first quarter from year-end 2022. Our two domestic construction segments experienced strong project growth year-over-year with combined RPOs increasing just under $1.7 billion or 36% from March 2022. The U.S. Mechanical Construction segment saw RPOs increased by $934 million or 28%. While the U.S. Electrical Construction segment saw an increase of $754 million or 58%. Much of the Construction segment's RPO increase results from continued demand for hyperscale data centers, semiconductor manufacturing and health care facilities. We are also engaged in the build-out of the Electric Vehicle or EV value chain, which includes the production and development of electric vehicles, battery plants and other manufacturing and industrial facilities driven to support this important new industry. We also are seeing increased demand from the on-shoring of manufacturing and industrial facilities as well as the expansion of capacities by some of our customers. Also across this whole EV value chain and across this reassuring and capacity expansion, we're seeing strong demand for our Fire and Life Safety services. Our U.S. Building Services RPO levels, increased $237 million or 23% from March 2022 and now stands at $1.25 billion, and a lot of that is a small to midsized project and service work. Like all of 2022, this quarter saw continued project awards in its Mechanical Services division which is focused a lot on energy efficiency, indoor air quality and general retrofit projects as well as repair service work which grows in all the channels we serve to deliver these projects. US Industrial Services grew RPO slightly year-over-year due to an increase in demand for our heat exchanger soft services and products. Moving to the right side of the page, we show RPOs broken down by market sector. As you can see, we have expanded sector segmentation to 10 market sectors. As we stated in our February call and for greater transparency into our current and future work, we split out what was previously reported as commercial RPOs into three sectors. The first of which is at the bottom is the traditional commercial projects, and that's the golden bar. And it includes work in office buildings, warehouses, retail and restaurants and other commercial buildings. Commercial sector RPOs have increased $198 million or a little over 12% on a year-over-year basis. We disaggregated these commercial sectors into other ones to include network and communication. And that is the maroon bar. And that includes work that we previously referred to as our telecommunications projects, which are data centers, data and fiber projects and network cabling projects. This sector has grown RPOs and million or 86% year-over-year. We now have a group called high-tech projects, and it's in the high-tech manufacturing sector, as shown by the green bar. And these projects and services are in the semiconductor biotech, life sciences, pharmaceutical and the EV value chain. Year-over-year, high-tech RPOs have increased $481 million or over 100%. We believe that these industries in this high-tech sector, high-tech manufacturing sectors are in for the most part in initial stages of capacity expansion and development. And that's what we -- we continue to expect to see growth, and it will be up and down a little bit as these are large projects a lot of times coming in, and that will drive growth in our RPOs. We also believe that to-date, there has been negligible impact of the government legislation that was designed to support these sectors. It just was passed, and we think that legislation will not only increase further demand, but we think it will elongate the duration of that demand. As I've said before, we continue to broaden our Fire & Life Safety services across all these sectors. That would be the gold, maroon and the green and we continue to provide projects across all sectors. Looking at other market sectors and year-over-year activity, healthcare RPOs are up 55%, institutional is up 10% and manufacturing and industrial up 35%; and short duration projects, which include much of the HVAC and repair service work, it's flat, maybe up 1%. And partially offsetting this increase was a reduction in transportation and water and wastewater RPOs. And looking at our market sector participation, it is noteworthy to see how balanced our participation is. This balance demonstrates one of the strengths we have highlighted before, which is our ability to provide electrical and mechanical construction, retrofit and repair service technical labor and solutions across diverse non-residential market sectors and US and UK geographies. We have decent work in hand and continue to bid new project opportunities across many non-residential market sectors. Our project mix is good, and we are executing well in all phases of project delivery in what is still a very challenging operating environment. I have mentioned several of these robust sectors before today that drive our growth. On the next page, on page 12, you'll see highlights and more depth that explain them to you. I am not going to cover that page in detail today because I think it would be redundant with the commentary I just made explaining our RPOs and with the enhanced disclosure around commercial, I think we've met many of the things we talk about on page 12. And with that, I will now turn to page 13 and 14. We expect our success to continue in 2023 despite a market that has uncertainty in it. we are going to leave our revenue guidance intact at $12 billion to $12.5 billion in revenues, but we are going to increase our earnings per diluted share guidance from what was a range of $8.75 to $9.50 to $9.25 to $10, and earnings per diluted share is what we now expect our guidance to be. Our RPOs remain strong, and we continue to see demand in key areas like we talked about, commercial remote semiconductors, health care, data centers, bio life sciences. We also are seeing strong demand, as I said before, for our fire life safety services across most major end markets. The supply chain issues and challenges that we experienced through the last still exists with long lead times, unreliable delivery schedule for finished systems like switchgear and HVAC equipment. We also expect to continue to see inflationary pressures for labor, materials and fuel. However, as we did in most of 2022 and in the first quarter of 2023, we will continue to adapt to better planning estimating and resource allocation. So where do we end up in this guidance range will depend on several factors, some in our control and some upside of our control. And I'm going to cover first the ones that we believe that are more in our control and it's not an exhaustive list, but it is the major ones. The first thing we need to do is we need to continue to increase our use of BIM or building information modeling prefabrication enhanced planning to drive efficiency, improve safety and increase the quality and productivity of our service delivery. We can need to continue to pay attention and enhance our pricing and estimating to mitigate the impact of inflation and supply chain challenges. Third, we need to leverage our reputation as an employer of choice to staff our jobs with the right mix of skills and classifications to not only enhance our labor productivity, but also our safety and cost. Fourth, we need to train and educate our employees at all levels of the organization to work smarter and lead better. Fifth, we need to be vigilant with our commercial service customers and actively monitor their financial condition and payment status with us as they remain challenged with occupancy and now refinancing issues. And finally, we always look to gain SG&A leverage. However, we always will have areas beyond our control that could affect our performance. Number one, material sourcing and lead times continue to challenge the market and our customers. I don't think that's improving in 2023, not much anyway. Number two, higher interest rates and economic uncertainty may impact the demand for some of our customers' products and services, and then it will impact us. I expect this will move some projects in the planning stage to later periods, and those in the decision stage may be postponed, rephased or rescoped. Number three, disruption caused by uncertain energy markets and supply, especially as the conflict in Ukraine continues and it could potentially intensify. OPEC took supply out of the market and China is reopening increases demand. However, we expect to continue to generate strong operating cash flow, and we'll continue to execute our long-term and successful capital allocation strategy that balances supporting our organic growth and acquisition, while returning cash to shareholders through dividends and share repurchases. Finally, as always, I would like to continue to thank the EMCOR team because none of this would be possible without your discipline, teamwork and dedication to drive the best possible results for our customers. And as a result of serving our customers so well, we continue to produce outstanding results for our shareholders. And with that, Keith, I will take questions