DARPA will host a Proposers Day in support of upcoming BAA HR001120S0028, Air Combat Evolution (ACE) Technical Area 1 (TA-1) on March 26, 2020 at the DARPA Conference Center (DCC) in Arlington, VA from 8:00 AM to 4:00 PM, Eastern Time (ET). The purpose of this Proposers Day is to provide information on TA-1 of the ACE program; promote additional discussion on this topic; address questions from potential proposers; and provide a forum for potential proposers to interact with potential teaming partners.