Dream Theater released the track “The Enemy Inside” in August and now they are offering the video, giving imagery to the lyrics the band says were written during the Boston bombings, guitarist John Petrucci told Billboard.

The topic of PTSD and a soldier’s struggle to get back to normal life after combat drives the video by the progressive metal musicians. Dream Theater  is never actually seen in the video, causing viewers to focus more on the message than the Grammy-nominated band. Watch the full video below. Production even led to discussions with war veterans and later a movement for Dream Theater to get involved with Save a Warrior.

Stemming from this work, Dream Theater plans to embark on further support causes for troops with visits for military bases planned in the future, according to Billboard. “The Enemy Inside” is featured on Dream Theater’s upcoming self-titled album, launching tomorrow on Roadrunner Records.