a system for communicating hardened , buried target arrival - related data from an airborne warhead device to a remote mission analysis location is disclosed . the communicated information especially relates to impact deceleration events encountered by a hardened target penetration warhead , events arising from the warhead impacting with the earth and then with one or more layers of hardening material such as concrete disposed in or adjacent a subterranean target . verification of warhead detonation may also be included in the communicated data . the system includes ultra high radio frequency communication from the subterranean warhead to a repeater apparatus disposed at or above the point of warhead earth impact followed by conventional signal relaying of the collected warhead experience data from the repeater to a remote mission analysis facility . utilization of the system to verify effective neutralization of targets , even targets remaining visually obscured throughout an identification , strike and reconnaissance sequence , is disclosed along with the capability of such a system to limit the need for dangerous subsequent strikes against the same target .