Redstone Arsenal officials announced on Tuesday that the “louder than expected noise levels” heard on Monday evening were not the result of rocket engine testing.

According to officials with Redstone Arsenal, those loud noises are due to rocket engine hotfire testing.

The first stage of Firefly Aerospace's 96-foot-tall Alpha rocket exploded while the spacecraft was vertical on a test stand in Briggs, Texas. Firefly made a name for itself in 2025 when its Blue Ghost ...