A pilot is safe after ejecting from an F-35 fighter jet that crashed at Eielson Air Force Base in Alaska, officials said.

The pilot declared an emergency and ejected before the plane went down Tuesday afternoon, military officials said.

An F-35 Lightning II crashed during a scheduled training event at Eielson Air Force Base in Alaska, causing a massive fireball and spreading debris not far from the fence line, a video verified as authentic by officials showed.