On 27 June the replenished air echelon began moving to recently captured Mokmer Airfield on Biak, completing the move by 2 July. It was joined by the ground echelon after 30 June. On 2 July, the squadron sent three missions of B-25s to provide air support to the invasion troops in the Battle of Noemfoor, bombing and strafing Japanese positions. On 20 August, the squadron's B-25s conducted low level photography over the Talaud Islands, covered by a bombing raid from the 345th Bombardment Group. The 17th was originally planned to relocated to Morotai after the capture of its airfields in October, but the move was cancelled so that it could prepare for relocation to Tacloban on Leyte after the Allied landings on that island.