The case of the widows, and, perhaps, their heirs from the crash of the B-29 - you said it took 50 years to recover information that what was going on was a cover up of bad maintenance records.

NPR: Invoking the State Secrets Privilege

That's a nice bonus, as long as they avoid problems of Feb. 29, 2008, when United Airlines suffered a systemwide crash of its automated check-in kiosks, forcing passengers to queue up for ticket agents.

WSJ: For Some, All in a Leap Day's Work

On 29 December, the crash-landing of a Tupolev-204 aircraft was recorded on the dashboard camera of a car on a nearby motorway.

BBC: Meteor highlights rise of dashboard cameras in Russia

Companies' monthly financial reports may run fine for years, then crash in February of a leap year when software tries to compare Feb. 29, 2012, to a nonexistent Feb. 29, 2011.

WSJ: For Some, All in a Leap Day's Work

At the close of Monday, the French CAC 40 was down 29% from recent highs, back near to the lows of the original credit crunch crash.

FORBES: Another Leg Of The Credit Crunch Is Coming Soon

Browne first donned a crash helmet and hurtled down a tube of ice at a two-week training camp in Calgary when she was 29.

BBC: Luger makes Olympic history