Looks like the USAF OA-X competition will not involve a combat trial, but more of desk exercise between the AT-6 and Super Tucano
“Rather than do a combat demonstration, we have decided to work closely with industry to experiment with maintenance, data networking, and sensors with the two most promising light attack aircraft — the [Textron] AT-6 Wolverine and the [SNC-Embraer] A-29 Super Tucano,” said Wilson. “This will let us gather the data needed for a rapid procurement.”
USAF axes planned light attack combat demo | Jane's 360