Question: The 357th Fighter Squadron (357 FS) is part of the 355th Fighter Wing at Davis-Monthan Air Force Base, Arizona, it operates which The 357th Fighter Squadron (357 FS) is part of the 355th Fighter Wing at Davis-Monthan Air Force Base, Arizona??
Sentence (from "Fairchild Republic A-10 Thunderbolt II"): Its secondary mission is to provide forward air controller – airborne (FAC-A) support, by directing other aircraft in attacks on ground targets.
Relevant evidence: No