WASHINGTON (AP) — If the U.S. government turns over the bulk collection of telephone data to an independent third party, higher costs and delays in identifying potential threats could result, the Navy admiral nominated to be the next head of the troubled National Security Agency said Tuesday.

Vice Adm. Mike Rogers, who also has been nominated to take over U.S. Cyber Command, provided little new insight into how he would handle planned changes of the NSA’s surveillance programs.