Operator
Ladies and gentlemen, good afternoon, and welcome to the ManTech's First Quarter Fiscal Year 2021 Earnings Conference Call. [Operator Instructions]
I would now like to turn the call over to Stephen Vather, Vice President, Corporate Development and Investor Relations. Sir, please go ahead.
Stephen Vather --
Vice President, Corporate Development and Investor Relations
Thank you. Welcome, everyone. Thanks for participating on ManTech's first quarter call. Joining me today is Kevin Phillips, our Chairman, CEO and President; Judy Bjornaas, our CFO; and Matt Tait, our COO.
During this call, we will make statements that do not address historical facts and thus are forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to factors that could cause actual results to differ materially from anticipated results. For a full discussion of these factors and other risks and uncertainties, please refer to the section entitled Risk Factors in our latest Form 10-K and our other SEC filings. We undertake no obligation to update any of the forward-looking statements made on this call. On today's call, we will discuss some non-GAAP financial measures, which we believe provide useful information for investors. These non-GAAP measures should not be evaluated in isolation or as a substitute for GAAP performance measures. You can find a reconciliation of the non-GAAP measures discussed on this call in our first quarter earnings release.