PDC � Paciti cation and Development Councils. PF�Popular Force, Vietnamese militia who were usually employed in the defense of their own communities. Phoenix program�A covert U,S, and South Vietnamese program aimed at the eradication of the Viet Cong infrastructure in South Vietnam.

PIIC�Photo Imagery Interpretation Center, POL�Petroleum, Oil, and Lubricants. Practice Nine�The codename for the planning of the antiinfiltra- tion barrier across the DMZ.

PRC-2 5 � Standard radio used by Marine ground units in Vietnam thai allowed for voice communication for distances up to 25 miles.

Project Delta �A special South Vietnamese reconnaissance group consisting of South Vietnamese Special Forces troops and U.S. Army Special Forces advisors.

PRU -Provincial Reconnaissance Unit,

PSA�Province Senior Advisor.

PSDF�Peoples Self-Defense Force, a local self-defense force or�ganized by the South Vietnamese Government after the ene�my's Tet offensive in 1968-

QDSF�Quang Da Special Zone.

QRF�Quick Reaction Force,

R&R�Resi and Recreation.

Recoilless rifle, 106mm, M401A1�U.S. built, single-shot, recoilless. breech-loaded weapon which weighs 438 pounds when assem�bled and mounted for firing; it has a sustained rate of fire of six rounds per minute and an effective range of 1,365 meters,

Regt� Regiment.

Revolutionary Development�The South Vietnamese pacification program started in 1966-

Revoiutionary Development Teams � Specially trained Vietnamese political cadre who were assigned to individual hamlets and vil�lages and conducted various pacification and civilian assistance tasks on a local level.

RF-4B � Photo-reconnaissance model of the F4B Phantom II.

RF-8A�Reconnaissance version of the F-8 Chance Vought Crusader.

RF�Regional Force, Vietnamese militia who were employed in a specific area.

Rifle, M 14 � Gas-operated, magaiine-fed, air-cooled, semi�automatic, 7.62mm caliber shoulder weapon, which weighs 12 pounds with a full 20-round magazine; it has a sustained rare of fire of 30 rounds per minute and an effective range of 460 meters.

Rifle, Ml6�Gas-operated, magazine-fed, air-cooled, automatic, 5.56mm caliber shoulder weapon, which weighs 3.1 pounds with a 20-round magazine; it has a sustained rate of fire of 12-15 rounds per minute and an effective range of 460 meters.

RLT�Regimental Landing Team.

ROK-Republic of Korea.

Rolling Thunder�Codename for U.S. air operations over North Vietnam.

Rough Rider�Organized vehicle convoys, often escorted by helicop�ters and armored vehicles, using Vietnam's roads to supply Ma�rine bases.

Route Package�Codename used with a number ro designate areas of North Vietnam for the American bombing campaign. Route Package I was the area immediately north of DMZ,

ROE�Rules of Engagement.

RPG-Rockei-Propelled Grenade.

RRU-Radio Research Unit.

Rural Reconstruction �The predecessor campaign to Revolutionary Development.

RVN�Republic of Vietnam (South Vietnam).

RVNAF�Republic of Vietnam Armed Forces.

RZ � Reconnaissance Zone.

S�Refers to staff positions on regimental and battalion levels. S-1 would refer to the Staff member responsible for personnel; S-2, intelligence; S-3, operations; S-4, logistics; and S-5, civil affairs.

SAM�Surface to Air Missile.

SAR�Search and Rescue.

SATS�Shorr Airfield for Tactical Support, an expeditionary airfield used by Marine Corps aviation that included a portable run�way surface, aircraft launching and recovery devices, and other essential expeditionary airfield components,

SCAMP� Sensor Control and Maintenance Platoon.

SEATO � Southeast Asia Treaty Organization.

2d AD�2d Air Division, the major U.S. Air Force command in Vietnam prior to the establishment of rhe Sevemh Air Force,

SecDef� Secretary of Defense,

SecStaic�Secretary of State.

Seventh AF - Seventh Air force, the major U.S. Air Force command in Vietnam,

Seventh Fleet�The U.S. fleet assigned to the Pacific.

SFD � Surprise Firing Device, a euphemism for a boobyrrap,

SID�Seismic Intrusion Device, sensor used to monitor movement through ground vibrations,

SitRep�Situation Report.

SKS�Russian-designed Simonov gas-operated 7.62mm semiauto�matic rifle.

SLF�Special Landing Force.

SMA " Senior Marine Advisor.

SOG�Studies and Operations Group, the cover name for the or�ganization that carried out cross-border operations,

Song� Vietnamese for "river."

SOP�Standing Operating Procedure, set of instructions laying out standardized procedures.

SPIE�Special Patrol Insertion/Extraction litie-

Spr Rept�Spot Report.

Sortie�An operational flight by one aircraft.

Sparrow Hawk�A small rapid-reaction force on standby, ready for insertion by helicopter for reinforcement of units in contact with the enemy,

SSDC�Southern Sector Defense Command. Steel Tiger�The codename for the air campaign over Laos. Stingray�Special Marine reconnaissance missions in which small Marine reconnaissance teams call artillery and air attacks on tar�gets of opportunity.

Srrike Company�An elite company in a South Vietnamese infan�try division, directly under the control of the division com�mander.

TAC(A)�Tactical Air Coordinator (Airborne), an officer in an air�plane, who coordinates close air support.

TACC�Tactical Ait Control Center, the principal air operations in�stallation for controUing all aircraft and air-warning functions of tactical air operations.