[Blennos]

Nasa. They canceled flights until the weather cleared.

Except for that one unfortunate occurrence in 1986.

[ScubaDiver]

Coincidentally, Allan J. McDonald - the Morton Thiakol (sp?) engineer who begged them to cancel the flight because of the unseasonably cold weather - just died a couple weeks ago.

[NavyShoe]

Or Apollo 12 which was struck by lightening twice just after launch.