A plane rolled into a building at Buckley Air Force Base in Aurora this afternoon, but it's unclear whether anyone is hurt.
F-A-A spokesman Mike O'Connor says an F-18 had landed at the base and was sitting on a ramp when it rolled into a hanger.
Other details are not yet available.
The base houses a number of F-16 jets from the 140th Wing of the Colorado National Guard.
On Tuesday, an Air National Guard pilot from Buckley suffered bruises and a sprained ankle when he ejected from his F-16 during an emergency landing at a Lamar Municipal Airport about 150 miles southeast of Denver.
The unarmed plane was on a routine training mission when a warning light indicated a fire in the tail section. That crash was under investigation.