The Naval Surface Warfare Center Crane requires routine maintenance for an ION-TOF Sims5 Mass Spectrometer. This is a sole-source procurement intended for ION-TOF USA, Inc., as the OEM is the only entity certified to service this proprietary device. The performance location is not specified in the description. While the government intends to award to a single source, it will consider capability statements from other responsible parties for the purpose of potentially conducting a future competitive procurement. All contractors must be registered in the System for Award Management (SAM).