U.S. Maritime Service uniforms. Merchant Marine Reserve, i.e., U.S. Navy Reserve Midshipmen at the U.S. Merchant Marine Academy The SSOWI is gold in color and is , reflecting the background of an eagle from the USS Constitution's stern, crossed naval officer swords, and a U.S. shield with fouled anchor from the U.S. Merchant Marine flag. Other Qualifications Aircrew The Aircrew insignia is issued to enlisted personnel trained to operate equipment aboard airborne aircraft. It is one of only three gold color breast insignia awarded to qualified enlisted personnel. Navy aircrew assigned to Navy aircraft place "(NAC)" after their rating to indicate this skill. Navy aircrew qualified to wear the Combat Aircrew insignia place "(CAC)" after their rating. Example: "CTT1(NAC) Jenkins" is Cryptologic Technician Technical First Class Jenkins, who is a qualified Aircrewman. Integrated Undersea Surveillance System The Integrated Undersea Surveillance System insignia is awarded to those personnel who have been trained and qualified in naval sonar and undersea surveillance (SOSUS) technology. Officer in Charge/Petty Officer in Charge The Officer in Charge/Petty Officer in Charge insignia is issued to personnel of the small boat community. It is issued to operators of small combatant and non-combatant vessels. The Small Craft insignia is awarded to officers and petty officers commanding small combatant vessels that patrol brown-water (littoral zone) and riverine environments. The Craftmaster insignia is awarded mainly to enlisted personnel commanding vessels, such as Landing Craft Utility, Landing Craft Air Cushioned, YTBs, and various other tugs and barges. It is also awarded to certain staff officers and a few select midshipmen. Parachutists The Parachutists insignia, also known as "jump wings", is awarded to personnel for training in airborne school. The basic insignia is issued for completion of basic parachutist training. The Naval Parachutist insignia is issued after 10 qualifying jumps. It is used both by the Navy and the Marine Corps. Enlisted personnel with jump wings place "(PJ)" after their rating to indicate this skill. Free-fall/HALO qualified place "(FPJ)" in their rating. Example: "EOD3(FPJ) Smith" is Explosive Ordnance Disposal 3rd Class Smith, who is Free-fall/HALO-qualified. The Naval Parachutist insignia is a common secondary insignia among Navy SEALs, SWCC, Navy EOD, and Special Amphibious Reconnaissance Corpsman. It is one of only three gold color breast insignia awarded to qualified enlisted personnel. Nuclear Weapons Security The Navy Nuclear Weapons Security Insignia (NWS) is awarded to enlisted sailors assigned to a Strategic Weapons Facility, Personal Reliability