–The PAVE PAWS radars in AK and MA are not yet part of the GMD system.
–Because of its location and orientation, Cobra Dane has never participated in a GMD intercept test.
–The BMEWS radars in Greenland and Britain are unable to observe GMD intercept tests.
Y = Transmitted data in real time to system.
F = Same as Y, but sensor experienced a failure.
O = Observed some part of test off-line. In the case of the Beale PAVE PAWS, participation may be limited to only observing part of the interceptor flyout.
N = Not used to observe test.