The essential question isn't whether selective availability could be reinstated (software can change, so the answer is yes, period, end of story) but rather whe

The essential question isn't whether selective availability could be reinstated (software can change, so the answer is yes, period, end of story) but rather whether there's any situation where it wouldn't also cripple a substantial portion of the US Government. How many GPS receivers even have support for military decryption these days, let alone contain keys which are ready to work in a crisis?