Evan's Law This bill requires the military department concerned to ensure that any window of a military family housing unit the bottom sill of which is within 36 inches of the floor is equipped with fall prevention devices that protect against unintentional falls by young children and that comply with applicable International Building Code (IBC) standards. Each department must brief the House Committee on Armed Services on the implementation of such requirement and include in the briefing: (1) a plan to retrofit existing military family housing units to meet such requirement; (2) the feasibility and cost-effectiveness of expanding such requirement to apply to windows with higher sills, modifying such requirement to require windows to be equipped with additional fall prevention devices that meet specified criteria, or extending such requirement to private housing leased or otherwise used by military families; and (3) the feasibility and cost-effectiveness of other potential methods to protect against unintentional window falls by young children in military family housing units.