Thank you, Dave. Good morning, and welcome to Parsons' third quarter 2023 earnings call. I'm very pleased with our team's performance and our ability to capitalize on the positive tailwinds in both our Critical Infrastructure and Federal Solutions segments. We delivered record quarterly results in total revenue, organic revenue growth, adjusted EBITDA and operating cash flow. We also achieved over 20% organic revenue growth in both segments for the second consecutive quarter, adjusted EBITDA growth of nearly 25%, a double-digit increase in contract awards, and over $200 million in quarterly cash flow for the first time in our company's history. In addition, we closed the strategic acquisition that strengthens our defensive cyber capabilities at a time when accelerating and evolving cyber threats are driving increased customer spending. As a result of our strong performance and the Sealing Technologies acquisition, we are raising our full year revenue, adjusted EBITDA and cash flow guidance ranges. During the third quarter, we generated total revenue growth of 25% and achieved year-over-year organic revenue growth of 23%, including 24% within our Critical Infrastructure segment and 23% within our Federal Solutions segment. Our record organic revenue growth was driven by our ability to win and ramp up new contracts, drive task orders to large single-award contracts, maintain strong employee hiring and retention, and operate effectively in two well-funded and growing markets. In addition, our successful M&A program is contributing to our growth by enabling Parsons to move up the integrated solutions value chain by offering higher-end capabilities and differentiated technology solutions resulting in our ability to bid and win larger and higher-margin contracts. We continue to efficiently grow our business. For the first nine months of 2023, total revenue grew 28%, while adjusted EBITDA increased by 32%. Our ability to drive adjusted EBITDA growth faster than our strong revenue growth demonstrates our focus on margin expansion. During the third quarter, we achieved a book-to-bill ratio of 1.0 times on an enterprise basis. These results were driven by a 14% year-over-year increase in contract awards. This is now the 12th consecutive quarter in which Critical Infrastructure's book-to-bill ratio has exceeded 1.0 times. We're pleased that over 50% of our wins represent new work, illustrating our continued ability to effectively compete and move up the value chain. On a trailing 12-month basis, our enterprise book-to-bill ratio is 1.2 times. We were awarded four contracts, two in each segment that exceeded $100 million during the third quarter. We've now won 13 contracts over $100 million through the first nine months of 2023. This is the most we've ever won in a single year, and it exceeds our prior annual revenue -- or our prior annual record of 11 contracts greater than $100 million in fiscal year 2022. Significant third quarter contract wins included: $160 million contract by the intelligence community to develop hardware and software solutions that enable intelligence operations. This seven-year classified contract represents both new and repeat work with a customer that Parsons has supported for over two decades. We booked $70 million on this contract in the third quarter. A seven-year $150 million contract by the Southern Nevada Water Authority to enhance system reliability, increase water use efficiency and improve community health. This contract represents both new and re-compete scope, and we booked $47 million on this contract in the third quarter. We are proud to have supported this critical customer for the past 30 years on more than 120 major projects. A five-year contract with an estimated value of $130 million on the NASA Repairs, Operations, Maintenance and Engineering contract. As a subcontractor to a small business, Parsons will provide facilities, construction management and engineering and technical services. This contract represents both new and re-compete scope, and we plan to book approximately $30 million in the fourth quarter. Additional scope of over $100 million for development of NEOM's THE LINE, an infrastructure project in the Kingdom of Saudi Arabia. Parsons is proud to be supporting this giga project, which is a first of a kind linear smart city, driven by 100% renewable energy. Parsons is contributing on all five of Saudi Arabia's giga projects. We were also awarded two contracts in the Indo-Pacific region totaling over $70 million supporting the United States Army Corps of Engineers. We were awarded a new three-year $44 million contract to provide the design build of United States Army Housing on Kwajalein Island. We were awarded a new task order for $27 million over five years to assess munitions, explosives and material for hazardous removal and provide construction management for the United States Missile Defense Agency facilities on Guam. We booked $54 million in total under these two contracts in the third quarter. We've been awarded extensive work in INDOPACOM by leveraging our program and construction management, engineering and planning, cyber and intelligence, and space and missile defense expertise. We are proud of our sustained regional presence, and we are focused on continuing to support our United States customers in the national security needs as part of the $9.1 billion Pacific Deterrence initiative in the fiscal year '24 budget. During the third quarter, we also announced and closed on our acquisition of Sealing Technologies in a transaction valued at approximately $200 million. Sealing Tech expands Parsons' customer base across the Department of Defense and Intelligence community and further enhances our capabilities in defensive cyber operations, integrated mission solutions powered by artificial intelligence, critical infrastructure protection and secure data management. Sealing Tech's defensive cyber capabilities complement Parsons' leading offensive cyber capabilities and increase our market share in full-spectrum cyber operations, which is expected to be a leading growth area in both Parsons Federal Solutions and Critical Infrastructure segments due to evolving cyber threats. After the third quarter ended, we also acquired Texas-based full-service consulting engineering firm, I.S. Engineers, which specializes in transportation engineering, including roads and highways and program management. This acquisition is consistent with Parsons' strategy of completing accretive acquisitions of companies with revenue growth and adjusted EBITDA margins exceeding 10%, while adding critical infrastructure talent and bolstering the company's portfolio in large and growing states. Texas is poised to receive nearly $30 billion in total transportation funding from the Infrastructure Investment and Jobs Act between 2022 and 2026. We have an active M&A pipeline across both segments, and we will continue to use our strong balance sheet to complete additional accretive acquisitions that align with our strategy and drive growth and margin expansion. As part of our long-standing commitment to ESG, during the third quarter, we were recognized by the STEM Workforce Diversity magazine for the eighth consecutive year as a top national science, technology, engineering, and math employer for minorities, women and people with disabilities. We were also named to the Best of the Best 2023 Top Veteran-Friendly Companies list by the U.S. Veterans Magazine. This award recognizes companies that are recruiting and providing a rewarding work culture for veterans, transitioning service members, disabled veterans and military spouses. In addition, we were recognized by Engineering News-Record as one of the top three global companies in 2023 in four categories: Professional Services, Program Management, Construction Management and Program/Construction Management for Fee. These rankings reflect our worldwide reputation and ability to successfully win and perform infrastructure programs. We are proud to be a company of our size with such high rankings. In summary, we had another strong quarter. For the second quarter in a row, we delivered record total revenue, organic revenue growth and adjusted EBITDA. We also achieved record third quarter operating cash flow, a double-digit increase in contract awards, and maintained strong employee hiring and retention. We closed an accretive acquisition that strengthens our defensive cyber capabilities. And after the third quarter ended, we acquired an infrastructure company that strengthens our engineering expertise and expands our geographic footprint in a high-growth state. I want to thank our talented employees for their commitment to successfully delivering on our customers' critical missions. Their dedication has enabled us to achieve our operating performance success. As I look forward, I continue to be very excited about our bright future. We're in six growing and enduring markets. In Critical Infrastructure we're benefiting from unprecedented global spending, which we expect to continue for decades to come. In our Federal Solutions segment, our portfolio of cyber and intelligence, space and missile defense, and critical infrastructure protection aligns to the national defense strategy and macro environment trends. Given the breadth of our capabilities and our technical expertise, I believe we have the right portfolio and the right team to capitalize on these tailwinds. These factors, along with our Sealing Tech and I.S. Engineers acquisitions provide us the confidence to raise our full year revenue, adjusted EBITDA and cash flow guidance. With that, I'll turn the call over to Matt to discuss our third quarter financial highlights. Matt?