From 20th Fighter Wing Public Affairs:

A military working dog (MWD) is a canine military member who aides their handler in performing security patrols or searching for and detecting explosives and narcotics.

All MWDs, from every branch of the military, are sent to Lackland AFB, Texas for fundamental training. The training is composed of a 90-day course where the MWD is taught basic aggression and search tactics.

Training and accommodations ...