Greg “Mouse” Gerwitz’s departure from Chicago P.D. followed a powerful arc involving PTSD, loyalty and a return to military service. Here’s what led to his emotional farewell.

Many Afghans who helped fight the Taliban struggle after resettling in the U.S. The results are sometimes deadly.

They survived some of the Afghanistan War's most grueling and treacherous missions. But once they evacuated to the U.S., many ...