Two former employees of a Connecticut-based defense contractor were indicted by a federal grand jury for allegedly stealing trade secrets that investigators claim could threaten the nation’s security.

It was announced Monday that Jared Dylan Sparks, 33, of Ardmore, Oklahoma, and Jay Williams, 45, of Griswold, Connecticut, allegedly stole the trade information from LBI Inc., a Groton-based company that designs and builds, among other things, unmanned underwater vehicles for the U.S. Navy Office of Naval Research, according to law enforcement. Both men were employed by the company and allegedly continued to upload LBI’s proprietary information to accounts in Dropbox while later working for Charles River Analytics, a Massachusetts-based company that developed software for LBI.