Went to ymenek and dropped a sloop. Shot the guard tower and when i asked for health check was told it was sliver of health off. I didn't believe it so i went and look it was full health. NO BODY WAS REPAIRING IT. We were shooting it damaging it in our system but after about 10 shots it would repair itself to full. This is a NaCl holding they are basing out of for tonight siege and their assets cannot be destroyed. only portals can be destroyed. Either this holding is bugged or there is a mechanic in game I am not aware of. Both guard towers are invulnerable. WEAK! This holding is on ruby. Spiked the entrance and exit down no problem. Problem started after spawned the sloop. I have video of walls repairing automatically and nobody was repairing.