A helicopter (10) has a fuselage (11) provided with storage means (19, 20, 24) for storing a plurality of missiles (16) longitudinally of the fuselage, reloadable turret means (17) beneath the fuselage for movement in azimuth and elevation and transfer means (20b, 21) for transferring a missile from the storage means to the turret means. In the illustrated embodiment the missiles are stored externally of generally vertical side walls (13) and a lower generally horizontal wall (14) of the fuselage and fairings (39) are provided to protect the externally mounted missiles.