NBA mandates metal detectors

ESPN
In the aftermath of the death of Osama bin Laden, the Chicago Bulls will use metal detectors to screen all patrons entering the United Center before Game 1 of the Eastern Conference semifinal against the Atlanta Hawks on Monday.

The NBA issued the mandate for the conference semifinals and all subsequent playoff games.
Makes sense. Make sure you plan accordingly for Game 3 and 4 in Boston and arrive at the TD Garden a little earlier.