- "Rex, see that building? The energy sphere? Best position, I think."
"You want to go around behind."
"It's risky, but we can make it."
"Okay, let's go for it, sir."
- ―Anakin Skywalker and Captain Rex
An energy sphere building stood in Crystal City on the planet Christophsis during the Clone Wars. During the Battle of Christophsis, a Torrent Company squad, led by Jedi General Anakin Skywalker and Clone Captain Rex used the roof of the building as a jumping-off point to assault a trio of octuptarra magna tri-droids.