I'm impressed that there is a process in place for this. It's not that uncommon, at least to get as far as the bench. The NHL mandates that each team have two

I'm impressed that there is a process in place for this. It's not that uncommon, at least to get as far as the bench. The NHL mandates that each team have two fully-dressed-and-equipped goaltenders at the ready so that a replacement can be a drop-in with little time loss. (They don't even get to face warm-up shots or much warm-up time.) If there is an injury to either, a goalie is called up from their AHL (the top minor league, like AAA in baseball) or ECHL (AA) affiliates, but short notice or far travel can preclude that, making the occasional need for an emergency goalie. Typically, an emergency goalie is a local college or club team goaltender (as available). They sign a 1-day NHLPA pro contract and (ideally) ride the bench all game. The San Jose Sharks have used club goalies from San Jose State before (SJSU is only Div III in hockey).