Collins Aerospace, Cedar Rapids, Iowa, has been awarded an estimated $12,016,370 fixed-price, indefinite-delivery requirements contract for the production of ARN-153 Tactical Air Navigation receiver transmitters. This was a sole-source acquisition using justification 10 U.S. Code 2304 (c)(1), as stated in Federal Acquisition Regulation 6.302-1. This is a five-year contract with no option periods. Location of performance is Iowa, with a May 4, 2026, ordering period end date. Using customer is Air Force. Type of appropriation is fiscal 2021 through 2026 defense working capital funds. The contracting activity is the Defense Logistics Agency Aviation, Warner Robins, Georgia (SPRWA1-21-D-0008).