(Updated at 9:55 a.m.) A couple of training exercises will be taking place in Arlington today and tomorrow.

An Arlington County Police Department training exercise has been ongoing since 6:00 a.m. in the 3900 block of N. 26th Street. Explosive Ordinance Disposal units will join the SWAT team for the joint training exercise. It will continue until about 3:00 p.m. today and isn’t expected to cause much disruption to resident.

Tomorrow (Wednesday), neighbors around Joint Base Myer-Henry Hall (JBM-HH) might hear some noise during a “force protection” exercise from 8:00 a.m.-3:00 p.m. There will be real and simulated training responses that include lockdowns and gate closures. There may also be sirens, blank cannon fire and simulated emergency announcements on the outdoor speaker system.

A number of first responder units, including police and fire fighters, will be on base for the training. Residents should not be alarmed at seeing this large emergency presence, or any of the personnel who may be wearing makeup to simulate wounds.

More information will be provided as necessary on the JBM-HH Facebook page and Twitter site.