Abstract: An aircraft-carried omnidirectional assembly of retroreflectors for reciprocal-direction reflection of laser beams comprises an aerodynamically slender body having fittings on its medial portion for attachment to underwing supports for externally carried loads. Recessed in each end portion of the body are a plurality of individual retroreflectors, one coaxial and facing endwise outwardly, the rest spaced lengthwise from it and one another and facing in different generally lateral directions but with their axes intersecting the longitudinal axis of the body and uniformly inclined towards the adjacent body extremity. The incident sectors of the several retroreflectors at each end of the body slightly overlap and complement one another to provide, collectively, a hemispherical incident sector symmetrical to the body axis and complementary to the collective hemispherical incident sector of the retroreflectors at the other end portion of the body.