If anyone cares to know what they're really seeing here: This is a JDAM (Joint Direct Attack Munition) strike. Based on the radial fragmentation, I'd say that these are MK84 warheads. Each one detonates at a specific altitude and angle to achieve a specific purpose. The first impact :)40) is a groundblast, intended to cause shockwave and structural damage. The second :)42) is an airburst, which throws fragmentation over a wider area (note the concentricity of those "dust puffs"). The third impact @ :46 is NOT a secondary detonation; it's another (penetrator) JDAM with a delayed fuse to take out subterranean facilities and/or tunnels. Note how the blast is directed almost straight up, as opposed to the lateral blast effects you'd see with secondary detonations.