OM | Muscat: Overseas Processing Centre 1, Seeb
https://www.openstreetbrowser.org/#map=15/23.6756/58.1249&categories=military 23.674708, 58.121265
Wikipedia: n/a
Other source: https://www.cryptogon.com/?p=43993
Same content in: theregister.co.uk
Note: More locations should be identified in Oman like BSR entry MPT Site 1, Muscat