Mary-Ann Rich rises at precisely 4:45 every morning. After feeding her cat, she ... sits for 20 minutes, motionless, her mind drifting far from the images of burned and blown up bodies that have haunted her for a decade. For the past four years, Rich has repeated this daily ritual to help heal her emotional scars from the 18 months she spent as an Army nurse in Iraq. After being diagnosed with post-traumatic stress disorder, she bounced from one treatment to another without much effect. Then she was introduced to Transcendental Meditation, or TM. She says that TM, more than any kind of therapy or pharmaceutical, has kept [the] horrors [of PTSD] at bay. Thousands of veterans ... have turned to TM to treat their PTSD - with blessing of the Pentagon and the Veterans Administration, which are struggling to treat the epidemic levels of PTSD and suicide among Iraq and Afghanistan vets. Aided by $30 million in grants from the Pentagon and the National Institutes of Health, [the nonprofit David Lynch Foundation] has worked ... to bring TM to vets and active-duty soldiers. TM practitioners receive a secret mantra - a meaningless word-sound - and repeat it to trigger a free-flowing 20-minute meditation twice a day. Colonel Brian Rees ... served as a doctor in Iraq and Afghanistan. TMs simplicity, Rees says, is uniquely suited to the job of treating PTSD. In 2011, he researched 33 different meditation techniques and found that TM had the greatest potential to bolster soldiers resilience.