In 2013, the U.S. Air Force 846th Test Squadron and civilian researchers at Lawrence Livermore National Laboratory successfully test-fired a kinetic energy projectile, a tungsten-rich shell moving at 3,500 feet-per-second more than three times faster than the speed of sound on a specialized track at Holloman Air Force Base in New Mexico. More recently, the Pentagon has tested the Navy electromagnetic rail guns hypervelocity projectiles with the help of conventional U.S. Army howitzers; the Navy hopes the completed cannon will be able to launch shells at up to 4,500 mph, six times the speed of sound.
Sure, rail launched. But what IF (wink, wink) there are several dozen tungsten rods in orbit above earth that can be released on command? Then, whose command?
Cool 2004 article from POP SCI about rods from the gods and other “future” weapons article says they are 14-15 years away and only thing preventing it was cost to put that much mass into space
The bottom line is that the Falcon Heavy is a more powerful rocket than the Delta IV Heavy, and by various measures the latter will probably soon cost the US government about five times as much. Put another way, the Department of Defense may have to pay half a billion dollars more for a single launch of certain military satellites on the Delta IV Heavy versus the Falcon Heavy.
https://www.cnbc.com/2018/01/08/spacex-zuma-launch-falcon-9.html
SpaceX successfully launches secret US government spacecraft in first mission of 2018
raining down judgment?
The tip on that looks scary.