Is The Timing Suspect?

JERUSALEM - A Palestinian gunman entered the library of a rabbinical seminary and opened fire on a crowded nighttime study session Thursday, killing eight people and wounding dozens of others before he was killed, police and rescue workers said.

So, how did get into a guarded seminary full of Jews? A Jewish sniper, Yitzhak Dadon, happened to be  roof of a nearby building, armed with a rifle, and shot the gunman as he emerged.