The mainline's primary partner in this political advocacy is the Children's Defense Fund (CDF). (religion-online.org)
Sony lists Amazon, B&H, Best Buy, and Reagan Wireless as primary partners. (pocketnow.com)
For flights taken on primary partner airlines Delta awards EQD at a rate of 25 % of miles flown for the cheapest Business Class fares...... (travelingformiles.com)