Charlie and Mac go to a middle school to volunteer to help protect the school from shooters.
["it's always sunny in philadelphia", 'always sunny', 'charlie', 'mac', 'protection', 'school security', 'guns', 'sword', 'samurai sword', 'school protection', 'Dave foley', 'shooters', 'principal', 'mcintyre']
It's Always Sunny in Philadelphia - School Security