IMO flight circuit breakers are much less problematic than community circuit breakers. Some compounds have over 10,000 residents, and a single positive case means bad news for all. On a slightly related note, I was initially worried about the "10 q-tips per test tube" practice (because all 10 get orange codes if 1 is positive...and it's conceivable that they live in ten different communities), but I haven't been burned yet. Single q-tip test tubes still exist. However, I don't know of any testing kiosks that always use them (e.g. my favorites usually give me my own test tube, but when they are running low, they switch to the 10/tube thing).