If you hear rumblings from northern Lebanon County in the next week, worry not – it’s probably just the Gap.

Here’s the training schedule at Fort Indiantown Gap for February.

Mortar live-fire training will be held Feb. 4 to Feb. 6 from 8 a.m. to 11 p.m.

Fort Indiantown Gap is the only live-fire and maneuver military base in Pennsylvania. It is considered the nation’s largest National Guard training facility by number of mandays trained – close to one million annually.

A project to construct a new security perimeter around the Gap is expected to get underway this year, with the timeline having been pushed back due to the coronavirus pandemic.

Here’s video from a previous year’s exercises.