sentences:  From its airfields in Tunisia, its subordinate units bombed Pantelleria, Sicily, and marshaling yards and airdromes on the Italian mainland.By October, the 5th Bomb Wing consisted of the two B-17 groups as well as two P-38 equipped fighter groups (1st, 325th FG).On 1 November 1943, Fifteenth Air Force was established as a second American strategic air force in the European Theater.