Defense Secretary Ashton B. Carter repealed the U.S. military’s ban on transgender service members Thursday, but the Pentagon still has a number of decisions to sort through in the coming months.

In his remarks, Carter focused heavily on why he thought the repeal was the right thing to do, noting there are presently at least 2,500 transgender troops on active duty. But he also laid out a multi-layered implementation process that requires numerous decisions in coming months by service chiefs and senior civilian officials in the Pentagon alike.

They include:

1. Forming rules for restrooms, showers and other day-to-day functions
Senior defense officials, speaking on the condition of anonymity to speak frankly, said after Carter’s announcement Thursday that commanders will be given wide latitude to decide how to best equip their facilities for transgender service. In many cases, the officials said, that could be as simple as putting up new privacy curtains in some bathrooms or setting specific shower hours for different kinds of troops.