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

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

Mortar live-fire training will be held April 8 to April 11 and April 16 to April 17.

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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.

Demolition training will be held April 10 to April 14 and April 16 to April 17.

Artillery live-fire training will be held April 15 to April 17.

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Exercises are run between 8 a.m. and 11 p.m.

Culminating the schedule this month are two back-to-back trainings on unexploded ordnance remediation using controlled detonations. Those trainings will be held on April 23 and April 30, at approximately 1 p.m. on both days.

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

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