User blog comment:Echo 1/UNSC Weaponry seems unrealistic/@comment-1430336-20100714214622

per above. and even if they did, it would require new training regimes (to me anyway) to get used to the weapon and overall, they need to get comfortable with the general idea of using lasers rather than their old ballistic weaponry. Possibly, after the HCW, Humans would phase out their weapons for DEWs but it would probably be combination of DEWs and Ballistic Weapons in the later future.