Rangin's expertise is not in long-range sensors, but he begins his work.
Just as Collins prepares to leave the Bridge, a bosun's whistle sounds over the intercom. "Bridge, this is Nurse Perry. Dr. Villa asked me to inform you that Lt. Cmdr. Roble was just found on Deck 19 near a machine shop, and has been brought to Sickbay. He appears to have been stabbed in the chest and is unconscious. We're prepping him for surgery now."
A moment later, Ens. Faisal Mahmoud calls Pourtash. He has a Security team already on the scene and reports, "We've found a bloodstained knife and some bloodstains on the deck where Mr. Roble was found, and are conducting scans and a thorough search of the area now. I recommend an immediate Security Alert."