The reaction N(D-2) + O-2 --> NO((2)Pi,v,J) + O(P-3,D-1) has been considered for many years as a possible source of O(D-1) in the thermosphere. We have used the Cold Chemical Infrared Simulation Experiment (COCHISE) facility to determine an upper limit to the O(D-1) branching fraction of this reaction by observing the absence of the radiative decay of O(D-1) and O-2(b(1)Sigma) produced by efficient energy exchange with O-2. By carefully modeling the kinetic and fluid dynamics of the experiment, an upper limit of 0.02 +/- 0.02 was found for the branching fraction into the O(D-1) product channel.