Chapter 87 

While they were waiting, more and more cracks continued to appear in the crystal dome around them. At first, Adair thought that the person making the cracks was trying to break in. It readily became apparent that whoever was making them was using them as warnings since on several occasions attacks completely opening the sphere appeared and no one came through, but as time went on, it appeared that the attacker was starting to get fed up since severely damaging attacks continued to rain down on the sphere.

Around 15 minutes in, Adair was unsure how much longer the attacker would continuously be giving out warning shots and start making actual attacks, and while Cassandra was doing her best to patch the holes that were being created, it clearly wasn't enough.