Quite a somber thread, so...to change it up a wee bit...

Crossing the line ceremony (crossing Equator) (most Navies)

Not a good time to be a "Tadpole" (someone who hasnt crossed the line) when the "Bears" (Others who have crossed the line,who remember how badly they were treated, are dead set certain looking to pay that forward) come hunting for you, so that you can pay your homage to "Neptune"...

(I won't even go into the details...)

Also heres a tip, keep the crossing the line cerificate with you in your kit, because if you can't produce it on demand, well, its just not good to have it done twice...