During one study, physicians at Walter Reed plan to give the psychedelic drug MDMA to active-duty soldiers with mild to moderate PTSD.

The move follows federal investigators’s call for a ban on helo flights on the route, citing a string of near misses in recent years.

Transgender service members have until March 28 to submit a voluntary separation request from the military and receive an honorable discharge.

The two-year test may bring the Navy — and perhaps the other services — closer to scientific consensus on the best way to measure body fat.