Northrop Grumman Corp. and Avue Technologies Corp. recently filed protests with the Government Accountability Office and the Federal Aviation Administration Office of Dispute Resolution for Acquisition concerning contract awards worth a total $3.2 billion.

Northrop Grumman is protesting Transportation Security Administration’s a decision not to consider it as a finalist for the $2 billion Information Technology Infrastructure Program contract. Unisys Corp. had already filed a protest with GAO, objecting to its omission from the list of finalists for TSA’s ITIP contract.

Flaws might exist in TSA’s conduct of the procurement, Northrop said. GAO has until Oct. 29 to issue a decision, the agency’s Web site states.

Avue is protesting the agency’s recent award of a $1.2 billion human resources contract to Lockheed Martin Corp. The company alleges that TSA did not follow procurement rules, including proper evaluation of pricing.

The chairman of the House Homeland Security Committee had criticized TSA for its decision to outsource management of the more than 40,000 transportation security officers employed by the agency.