It's a good thing that Japan's Meteorological Agency actually had the nationwide earthquake warning system ready to rock in March, as the fiber optic system was put into use this month in an attempt to warn citizens of an imminent tsunami. Reportedly, a "huge tremor" struck and triggered the system, which allowed warnings to be beamed out en masse "within a single minute." Although the system was tested before in false alarm fashion, this was the first time it had been used in a legitimate emergency, and it beat the previous options "by around one to two minutes." Sadly, it still wasn't quick enough to save everyone from the 6.9-magnitude quake, as 170 people suffered various injuries while one individual passed away, but the statistics could've been much worse had the speedy system not kicked in at all.

DSLR dust removal / sensor cleaning shootout