Four retired ex-military personnel and another retiree attempt the unthinkable and dust off their old uniforms for one last explosive mission to rescue their grandchildren.Four retired ex-military personnel and another retiree attempt the unthinkable and dust off their old uniforms for one last explosive mission to rescue their grandchildren.Four retired ex-military personnel and another retiree attempt the unthinkable and dust off their old uniforms for one last explosive mission to rescue their grandchildren.