The present invention relates to a nail shooter. The composite bone graft includes two or more connected, discrete, bone portions, and includes one or more biocompatible connectors which hold together the discrete bone portions to form the composite bone graft. A graphical representation of the host aircraft, the neighboring aircraft, and the first predicted time is rendered on the onboard display device. If the two group membership fields match, the current task is permitted to use the translation. With respect to the diffraction direction of the hologram, the auxiliary light receiving domains D3\u20141, D3\u20142 are provided on both sides of the light receiving domain D3. The second-lid wafer is sized similarly to and bondable to the first-lid wafer so as to sealably close the voids.