a loudspeaker has a horn adapted to both cause air drag and to direct acoustic waves . a speaker and signal generator are electrically coupled to the speaker and secure to the horn . the loudspeaker is transported over a target and dropped from a high elevation . upon landing the loudspeaker commences broadcasting a message . a shock absorber may secure to the horn and absorbs some of the shock of impact . contact sensors or motions sensors may trigger broadcasting a message from the speaker . a portion of the horn may be expandable to increase the size of the horn upon deployment or upon impact with the ground .