Color Red is no substitute for an Iron Dome defense system, but with as little as 15 seconds between an air defense warning and a rocket striking its target, Color Red offers a little bit of extra time for users to find shelter.

FORBES: Rockets Coming Down On Your Head? There's An App for That

And finally, a word of warning: the air will almost certainly be tinged a delicate shade of nicotine blue.

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Air-traffic controllers are warning that the furloughs could force them to reduce the rate of flights arriving at big airports like Chicago's O'Hare International and Miami International by a third to a half during peak periods or bad weather.

WSJ: Airlines Dispute Planned Air-Controller Cuts