Flight control apparatus (10) for a cannon-launched anti-tank projectile. A boom that structurally secures four fins (18) and four nozzles (20) to an afterbody (12) of the projectile, and that provides for fluid communication from the afterbody to the nozzles, is provided in the form of an assembly (14) comprising intersecured tubes (22, 24, 26, 28) which define a longitudinal axis (30) of the assembly. The boom assembly (14) considerably reduces the weight and fabrication cost associated with a conventional boom which is provided in the form of an integral multi-channeled cylinder.