B737-700
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Flight Crew Last 90 Days 324
Time Pressure; Situational Awareness; Distraction
Conflict NMAC
General None Reported / Taken
Human Factors; Aircraft; Environment - Non Weather Related
On descent into OMA at 6;700 feet; an object appearing to be a drone; but possibly balloons; appeared at 1 o'clock and slightly below us. From our perspective it moved from right to left and went right under our left wing. To me it appeared to have lights on it; which is why my immediate thought was drone. It all happened very quickly and there was no time to maneuver to avoid. We immediately made a radio call to Approach; who was currently handling us; to try and pinpoint the exact location. No sounds or evidence of impact noticed. I will add that if this was indeed a drone; we better figure it out quickly; as it would be an obvious easy entry; low cost threat to national security.
Captain believes object was a drone due to light configuration. Event lasted 3-4 seconds.
B737 Captain reported NMAC with a UAV.