This study examines the content of press releases from the National Science Foundation (NSF) Science and Technology Centers (STCs) to determine how public information officers (PIOs) presented the outcomes of centers to journalists and the public. A total of 68 press releases were analyzed for type of news covered, visibility of centers and their funding agency, extent of inter-institutional cooperation in the issuance of releases, and players covered. Three-quarters of STC releases mentioned the center, but less than half mentioned the NSF STC program and one-quarter didn't mention the center name at all. PIOs covering the STCs mainly issued research-oriented press releases accredited to their own institution. There was a low level of inter-institutional cooperation, with 13% of press releases jointly issued. Compared to research results and institutional news, which together accounted for 82% of the news events, broader activities such as knowledge transfer, diversity enhancement, and education were much less visible.