The crew is also responsible for keeping the ice litter-free, the most common projectiles being hats tossed onto the rink after a player scores a hat trick a third goal in the same game.

WSJ: Ralph Gardner Jr.: The Sport of Zamboni

Crew and for being fiscally responsible by repeating some of her outfits.

FORBES: Michelle Obama's Best Fashion Moments As First Lady

Russia has urged South Sudan to identify and punish those responsible for shooting down a UN helicopter and killing its four Russian crew.

BBC: Russia demands action over UN helicopter downed in S Sudan

Ban extended condolences to the crew members and called on the government of South Sudan to bring whoever is responsible to justice.

CNN: Russia urges South Sudan to act over downed U.N. helicopter