There's been a schedule change for the launch of a Minuteman III missile from Vandenberg Air Force base due to a labor dispute.
The labor dispute involves civilian contract employees working for RG Next, who want better wages and benefits.
The laborers were non-union until recently, when they joined the Teamsters. The base says the group is vital to launch operations.
The launch is part of a routine test.
The date was set for Tuesday, but moved to a new launch window between 11:39 p.m. Wednesday and 5:39 a.m. Thursday morning.