Using 2011 active enrollment figures from the Women in Military Foundation, and running against US suicide rates, one would expect 189 suicides in the military from Jan to Sept. It's really not a surprise that added pressures our military faces would result in the rate 31% above normal.
It could easily be an outlier. The other clear problem is Teddy is comparing deaths among the 90,000 solders in Afghanistan and the 1,400,000 total active duty.
If the suicides are among both active duty and reserves, the expect number of suicides in the military would rise to 295.