Emergency!

John is convinced that weird things will happen on their shift: a parachutist lands in a tree, an obese man collapses while jogging, an 80-year old woman breaks her ankle while dancing, a man can't stop the hiccups, a boy tries to cryogenically freeze himself, an golfer is bitten by a snake, a prostitute brings in a customer suffering from chest pains, and John is injured during the rescue of a drunk driver.