The Americans’ departure—the exact timing of which had been kept secret for security reasons, despite weeks of preparations alongside the Afghan military—came just as the Taliban have been advancing across the country, including in the vicinity of Bagram, about 40 miles northeast of Kabul. While the U.S. military has made public its intention to leave, and worked with Afghan officials on the handover, the departure still came as a shock to many Afghan soldiers, leaving many rattled... Now, Afghan officials are trying to figure out how they will protect the base, maintain it—and turn the lights back on. The U.S. will continue to support and fund Afghanistan’s security forces, but helping Afghans from afar, such as with restarting generators, for example, will be a challenge... Afghan officials said they don’t know what to do with much of the American stuff they now own. But Gen. Kohistani said he appreciated some of the remaining infrastructure, including a 50-bed hospital, fuel storage tanks, other military and civilian equipment and radars for the flight operations. The base also houses a prison that is under Afghan control and still holds about 5,000 inmates, he said, most of them suspected members of the Taliban or Islamic State.