Keeping early missile systems maintainable at sea

How did the US Navy support crews maintaining early shipboard missile systems?

A dedicated engineering support organization supplied maintenance resources and could respond directly within 24 hours, including by sending an expert to the ship.

The Naval Ship Missile System Engineering Station supplied training, tools, documentation, and rapid technical support. Its goal was to let ships' crews maintain complex weapons without routine dependence on contractors. Direct communication bypassed personnel who were not involved in the repair. The station promised a response within 24 hours and could send a specialist aboard. This was part of the institutional infrastructure that made missile-armed warships maintainable at sea.