sm_fortressblast_drop_team is a ConVar in Fortress Blast, added since release. It controls what teams are able to drop powerups upon death (but only if
sm_fortressblast_drop is set to 1 or 2). It can be set to 1 to allow any team, 2 to allow only the RED team, or 3 to allow only the BLU team. The default value is 1.