JR wrote:

Now, in northern NJ and northern Wi there are coverage gaps where the GPS
can't resolve it's location, but these are a different situation as the
unit tells me it can't find itself and why. Not so with the DC & Ft. Hood
issues.

Wayne is refusing to admit that jamming occurs, however here's a typical
British NOTAM from 06-June-2007:

"GPS SIGNAL JAMMING TRIALS. JAMMER LOCATED WITHIN 0.5 [nautical miles]
OF 5016N 00516W (PORTREATH, CORNWALL). ACTIVITY MAY AFFECT AIRCRAFT
WITHIN 6NM RADIUS FLYING BELOW FL300 [30,000 feet] ... DURING TRIAL
PERIODS, GPS RECEIVERS MAY SUFFER INTERMITTENT/TOTAL FAILURE, OR GIVE
INCORRECT POSITION INFO ..."

Note the last part, it's not just jamming as in drowing out the signal
with noise, it's more subtle than that the jamming may involve feeding
the GPS incorrect position info. This, in the World According to Wayne,
cannot happen and any claim that it does happen is some sort of appeal
to irrationality.