Iraq veteran Eric Johnson fought Syria 's government , FBI says . Harroun appeared Thursday in federal court in Alexandria , Virginia , and was charged in connection with his alleged use of a rocket-propelled grenade in Syria . Group he allegedly fought for is part of terrorist group , Justice Department says . FBI arrested Harroun at hotel near Washington .
Iraq veteran Eric Johnson fought Syria 's government , FBI says . Group he allegedly fought for is part of terrorist group , Justice Department says . FBI arrested Harroun at hotel near Washington .