Alex Brandon/AP

President Trump signed an executive order Friday afternoon which could potentially lead to former active duty military members being recalled into service.

This order grants the Defense Secretary the authority to order up members but as of now, there is no indication of anyone being called up.

“Decisions about which individuals may be activated are still being reviewed. Generally, these members will be persons in headquarters units and persons with high demand medical capabilities whose call-up would not adversely affect their civilian communities,” Chief Pentagon Spokesman Jonathan Hoffman said in a statement.”

“This is a dynamic situation, we do not currently have a projected number of expected activations, but the Department is now fully authorized to make activations as needed. We will provide updates as they become available,” Hoffman added.

In most cases, after concluding their military obligations, service members will enter into what is known as the Individual Ready Reserve.

Some context: That ready reserve status requires no active participation, leading the vast majority of service members to consider being in that status the same as being out of the military.

Most service members are in that designation for a period of years.

There have been a handful of cases in the past where members of this reserve have been called up for active duty — such as during the height of both Iraq wars.

Usually this is used when the military needs some specific skill sets.