There are at least 2 bands named flag
These are photos from concerts where FLAG played, so they may be of other bands that played the concert as well.
Punk Rock Bowling & Music Festival May 25 - 27, 2019 Las Vegas, Nevada, United States Uploaded by Trevor Ronde
Punk Rock Holiday 1.6 - Day #2 Aug 9, 2016 Tolmin, Tolmin, Slovenia Uploaded by Zeta Kebab
Amnesia Rockfest 2016 Jun 23 - 26, 2016 Montebello, Quebec, Canada Uploaded by Vanessa Hébert
Riot Fest & Rodeo -Day 2 Sep 21 - 22, 2013 Byers, Colorado, United States Uploaded by Jeepgurlio
Riot Fest 2013 Sep 21 - 22, 2013 Denver, Colorado, United States Uploaded by Troy C
RiotFest & Sideshow Sep 21 - 22, 2013 Byers, Colorado, United States Uploaded by Miklogonzalez
Riot Fest 2013 Sep 13 - 15, 2013 Chicago, Illinois, United States Uploaded by Tom Kennedy