"There's still nothing on sensors!" Ranul shouted from his station directly in front of the Captain. He braced himself against his console and squinted his eyes against the smoke that was beginning to swirl around the bridge. His fingers moved frantically over his console, trying desperately to make sense of what was happening. Without waiting for orders, he brought the scene outside up on the view screen and there they were; visible only to the naked eye.
"Those ships aren't showing up on sensors at all!" Ranul said, turning in his seat. "That's why we were getting null readings! They can block our sensors somehow."