"Doesn't the Army have the ability to make its own, more pertinent, more secure mobile device for the troops?" There's only half a million active-duty soldiers

"Doesn't the Army have the ability to make its own, more pertinent, more secure mobile device for the troops?" There's only half a million active-duty soldiers in the Army, compared to tens of millions of iPhone/Android customers. At that scale, adapting existing products may be cheaper.