Defense Secretary Ashton Carter repealed the U.S. military‘s ban on transgender servicemembers Thursday, but the Pentagon still has a number of decisions to sort through in the coming months.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

DOD to allow transgender servicemembers to serve openly

Carter 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: