The mechanical sentinels loaded with blue crystals quickly moved forward, followed by a series of dull "boom" "boom" sounds as the air in front twisted.
"What is this?" Finn Lewis immediately asked curiously, but as Finn's question arose, the Dark Messenger Knights had already begun their charge. However, they were not colliding with Sekata Brown and his troops as Finn had seen before; instead, they crashed into an invisible, transparent wall.
"It's a kind of static force field designed to separate the enemy from our units, but it only lasts for a limited time. According to my energy scan, it won't last more than thirty seconds to a minute," Luna Starfield's voice quickly chimed in.
Although it was only thirty seconds, it was enough. Don't forget that, despite their slow firing rate, heavy tanks can easily manage one shell per second.
In thirty seconds, those heavy tanks could launch thirty shells, and thirty shells would be too much for even bodies of steel to withstand.
