This is a sources sought notice for market research, not a solicitation, to identify companies that can provide 20 GSM locator systems for Foreign Military Sales to the Pakistan Army. These systems must accurately detect, geolocate, and pinpoint signals from mobile communication devices to support counter-terrorism operations. Interested parties must submit company qualifications, technical capability details (including frequency bands, geolocation accuracy, form factor, and power specifications), rough order of magnitude pricing, and availability information. Respondents must also address export control status, country of origin, and past performance; participation is voluntary, and the government will not reimburse response costs. No budget amount is specified, and delivery would be for end use in Pakistan.