Naval Support Activity Mechanicsburg will conduct a security exercise Tuesday morning as part of a two-week anti-terrorism, force-protection exercise, the base said Monday.

The active shooter, security lockdown and shelter in place exercise will run from 9 a.m. to noon at the base, located off the Carlisle Pike and South Sporting Hill Road in Hampden Township.

The base’s public affairs office said there will be emergency vehicles transiting the area, as well as possible minor traffic delays and the use of the installation-wide loud speaker system.

The event is part of a larger Navy exercise − Solid Curtain/Citadel Shield 17. It is a regularly scheduled event and is not in response to any specific threat, the base added.