Iridium’s Fourth Falcon 9 Mission Holding To Dec 22 As Other SpaceX Missions Slip November 28, 2017 adminThe fourth SpaceX Falcon 9 mission for mobile satellite communications operator Iridium remains on track for Dec. 22, the company said today, assuaging concerns that the launch would be delayed along with other December missions.http://spacenews.com/iridiums-fourth-falcon-9-mission-holding-to-dec-22-as-other-spacex-missions-slip/