Iran's navy commander reveals new threats, including military, submarine capabilities
In addition to heavy submarines, the Iranian Navy is also developing special logistics drones that can carry equipment and even people.
The Ohio-class ballistic missile submarine USS Tennessee returns to Naval Submarine Base Kings Bay, Georgia(photo credit: REUTERS/MASS COMMUNICATION SPECIALIST 1ST CLASS JAMES KIMBER/U.S. NAVY/HANDOUT VIA REUTERS)Updated: 
