High Quality Content by WIKIPEDIA articles! Killswitch Engage is an American metalcore band from Westfield, Massachusetts, formed in 1999 after the disbandment of Overcast and Aftershock. Killswitch Engage`s current lineup consists of vocalist Howard Jones, bassist Mike D`Antonio, guitarists Joel Stroetzel and Adam Dutkiewicz, and drummer Justin Foley. The band has released five studio albums and one DVD.