Challenger Jet Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 120; Flight Crew Total 3800; Flight Crew Type 150
Distraction; Situational Awareness
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Rejected Takeoff; Flight Crew Returned To Gate
Human Factors; Aircraft
Copilot was distracted by line personnel during initial walk around.  Line personnel offered to 'pull the pins' and copilot agreed.  Copilot did not verify that line personnel pulled the pins AND the pitot covers.  The pilot in command and the mission specialist both boarded the aircraft and missed that the pitot covers were still on the pitot tubes.  Normal start and taxi sequence of events were uneventful.  On initial takeoff; pilot not flying announced that there was no airspeed indications and called for an abort.  Pilot flying aborted uneventfully.  After returning to the chocks and shutting down engines; it was discovered that the pitot covers were left on the pitot tubes.
Some time ago; pitot tube covers had red streamers attached to prevent this type occurrence; but were removed and/or rolled and secured by plastic ties; by unknown personnel.  These should be reattached.  Pitot covers need to be orange.  Rolling up the streamers on the pitot covers is an unacceptable practice. Add 'pitot covers' verbiage into the Starting Engine Checklist
CL60 flight crew reported the First Officer failed to remove the pitot covers on walkaround; citing the absence of red streamers on the covers as contributing.