The purpose of Amendment 1 is to extend the due date for questions from 4 August to 14 August and the due date for the Solicitation submission from 11 August to 21 August. ********************** The U... The purpose of Amendment 1 is to extend the due date for questions from 4 August to 14 August and the due date for the Solicitation submission from 11 August to 21 August. ********************** The United States Air Force (USAF) anticipates awarding a single Firm Fixed Price (FFP) Purchase Order for the procurement of a John Deer 1580 Terrain Cut Front Mower or equal.