I don't believe the U.S. ARMY is in charge of when S.A. it's turned on or off. Pres. Bubba ordered it turned off. And since it was turned off my EPE on my GPS always has the same 14'. That's an older model Garmin 48. My 76 with WAAS was about 7'. Before S.A. was turned off the EPE would be in a constant state of change.

I think it's possible that the U.S. military has the ability to choose the area of world where it would want a greater error.