The United States Army sought a new family of vehicles to replace the aging fleet of M113 APCs and M2 Bradleys with the BCT Ground Combat Vehicle Program. With modification, the Puma satisfied the technical requirements of the BCT Ground Combat Vehicle Program and was offered by SAIC and Boeing. The SAIC-Boeing team was not awarded a technology development contract for their Puma-based vehicle in August 2011, and then filed a protest. The protest was denied in December 2011 based on concerns over the vehicle's force protection features, primarily the proposed active protection system and underbody armor, and 20 significant weaknesses which had potential solutions offered that were judged as inadequate. On 2 April 2013, the Congressional Budget Office released a report that advised purchasing current infantry fighting vehicles instead of developing a new vehicle for the GCV program. Buying the Puma would save $14.8 billion, and was called the most capable vehicle. The Army responded by saying no existing vehicle could match requirements to replace the Bradley.