This is a 100% Total Small Business Set-Aside solicitation for Sound Transmission Class (STC-50) Testing Services at Buildings 1870A and 4906A at Edwards AFB. The period of performance is 30 days after receipt of order. The government will award using Lowest Price Technically Acceptable (LTPA) evaluation, with award based on the lowest evaluated price among technically acceptable offers. All questions are due by 9:00 AM Pacific on June 29, 2026, and quotes are due by 9:00 AM Pacific on July 2, 2026. The NAICS code is 541380 with a $19 million size standard.