...this is what tests are for - afaik this is the first national EAS test...Identify the glitches, rerun the test. Rinse, repeat.
I think I view this test similarly to Lono (I absentmindedly missed the test, BTW, and didn't have a radio or TV on. Doh!) As the first national test, half the purpose is finding the bugs in the system. Good thing that asteroid was going to miss us yesterday!
