Tanks bullets until they run out of ammo

“Fire!” the pilot of Stalker One commanded.  Both aircraft opened up with their M61A1 Vulcan minicannons, mounted on the right side of the fuselage.  The guns rained hot lead onto their target.
Bright yellow explosions erupted all over Godzilla’s face, chest, and neck.  They looked tiny against the creature’s vast bulk.  For almost five seconds, the F-15s poured bullets onto Godzilla, until their shells were depleted.