Agency Failed to Support Conclusion that Offerors’ Prices Were Realistic, Despite Large Gap; GAO B-417427, ATA Aerospace LLC

Protest challenging the agency’s cost realism evaluation is sustained, where the agency failed to explain how it reasoned that the protester and awardee had each proposed costs that were analogous to historical data and realistic for the task order, when the awardee’s costs were half those proposed by the protester.