When is the deadline to file a bid protest, and what actions or inactions can cause potential future protest arguments to be waived? These seemingly simple questions can have surprising answers. In a recent bid protest decision, GAO held that a contract awardee can waive potential protest grounds by failing to raise them when intervening in a competitor’s bid protest of its award. See VS2, LLC, B-418942.4, B-418942.5, Feb. 25, 2021, 2021 CPD ¶ –, 2021 WL 873343. C&M’s Eric Ransom and Rob Sneckenberg explain the VS2 decision and provide useful takeaways for contract awardees in this “Feature Comment” published in The Government Contractor.