A giant surveillance "blimp" that had been tethered at an Army facility broke loose and drifted over Maryland and Pennsylvania.

The unmanned aircraft, one of two Joint Land Attack Cruise Missile Defense Elevated Netted Sensor Systems that have been surveying the East Coast, came detached around noon while hovering at an altitude of 16,000 feet.

According to reports, the blimp dragged its tethers and caused power outages, leaving more than 28,000 people without power.

The aircraft, which is worth more than $1 billion, eventually crash-landed near a school in central Pennsylvania.

You might also be interested in...

Greta: 'Calling Someone a Hard Worker Is Offensive?!'

WATCH: Watters' World Gets Shut Down at Cornell University

Sheriff Clarke: 'Obama's Support of Black Lives Matter Is Based on Lies'

Sparks Fly on 'The Kelly File' over Video of Violent Classroom Confrontation