SpaceX postpones launch of first Air Force mission for a new network of GPS satellites

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UPDATE: SpaceX postponed its first mission for the U.S. Air Force on Tuesday in Florida. The company will attempt to launch again 24 hours later.

@SpaceX: SpaceX team called a hold due to an out of family reading on first stage sensors. Vehicle and payload remain healthy; next launch attempt is tomorrow at 9:07 EST, 14:07 UTC.