FeaturesShort FinalShort FinalBy Editorial Staff - Published: August 5, 2007 Updated: April 10, 20190PrintEmailFacebookTwitterLinkedin Overheard in IFR Magazine‘s “On the Air”Overhead during a rather quiet evening on Minneapolis Center.Unknown aircraft: Minneapolis Center. Still there?Minneapolis Center: Engineering to Bridge. Aye, Captain. Tricorder readings indicate carbon-based units still infest the planet.