Operation Jefferson Glenn

On 7 September Troop B, 2nd Squadron, 17th Cavalry Regiment gunships killed 6 PAVN. On 15 September a bomb damage assessment mission by Troop B found 5 PAVN trucks destroyed. On 18 September 1970 Troop A, 2/17th inserted the ARVN 1st Division's Hac Bao Reconnaissance Company resulting in 1 PAVN killed and 1 AK-47 captured and a further 5 PAVN observed killed from previous helicopter attacks. On the same day Troop C gunships destroyed 1 PAVN truck in the A Sầu Valley and follow-up airstrikes destroyed another truck, a .51 calibre machine gun and several bunkers. On 21 September Troop C gunships killed 4 PAVN. From 24–6 September Troop A gunships killed 3 PAVN and US airstrikes killed a further 5. On 28–9 September Troop C gunships killed 2 PAVN.[3]^:2–3

On 5 October the Troop A, 2/17th aero-rifle platoon was landed to recover two PAVN packs, they engaged and killed 2 PAVN and a mortar position was destroyed by artillery fire killing a further 3 PAVN. On 24 October Troop A, 2/17th found and destroyed 50 boxes of 122mm rocket warheads.[3]^:3

On 11 December the Troop C, 2/17th aero-rifle platoon was inserted at A Lưới Camp to destroy bridges on Route 548. On 16 December a Troop C LOH was shot down by .51 cal fire. On 19 December a Troop C FLIR team killed 10 PAVN.[3]^:4

On 6 January while searching for a downed Troop C AH-1G, Troop B found an AH-1G lost since 1969 near Firebase Veghel and the crew remains were recovered. From 11–25 January Troop A, 2/17th killed 7 PAVN. On 14 January a Troop B LOH was shot down. On 16 January another Troop B LOH was shot down by .51 cal fire. Troop C killed 3 PAVN near Firebase Currahee.[3]^:4–5 On 10 February a Troop B LOH was shot down by 0.51 cal fire in the A Sầu Valley with the 2-man crew missing. On 11–4 February Troop B gunships destroyed 1 truck and a bulldozer in the A Sầu Valley. On 18 February the Troop B aero-rifle platoon was inserted to recover the bodies of US Marine helicopter crewmen. Throughout February and into April 2/17th supported Operation Lam Son 719.[3]^:5–6

On 1 April Troop B's aero-rifle platoon was inserted to recover a downed AH-1G at Firebase Veghel. On 6 April a Troop B UH-1 on a prisoner capture mission was hit by ground fire resulting in 1 US killed. On 8 April the Troop B aero-rifle platoon was inserted to recover a downed UH-1H. On 10 April the Troop B command and control helicopter was hit by 37mm antiaircraft fire killing the Troop B commander. On 13 April a Troop B LOH was shot down. From 13–15 April Troop A gunships killed 6 PAVN and destroyed a truck in the "Vietnam Salient" south of Route 9 where Vietnam protrudes into Laos. On 15 April Troop D was inserted into the A Sầu Valley for ground reconnaissance. From 19–23 April Troop A supported the ARVN 54th Regiment and 258th Marine Brigade operating near Firebase Holcomb (16.664°N 106.982°E / 16.664; 106.982) resulting in 1 PAVN tank and 1 APC destroyed. On 20 April Troop D was again inserted into the A Sầu Valley for ground reconnaissance. On 23 April a Troop B UH-1H flying in support of Vietnamese Rangers was shot down with 1 US killed. On 24 April Troop D was inserted to reinforce a Ranger team in contact, US losses were 5 killed, while PAVN losses were 12 killed. On 26 April while inserting the Hac Bao Company Troop A gunships killed 7 PAVN. From 27–30 April Troop A destroyed numerous PAVN facilities and killed 3 PAVN.[3]^:6–7

On 1 May Troop C's aero-rifle platoon was inserted to extract a downed aircraft from Firebase Airborne but PAVN fire forced their evacuation without recovering the aircraft. On 3 May Troop A destroyed two .51 cal machine guns near Firebase Patton. On 9 May Troop B's aero-rifle platoon was inserted into the A Sầu Valley to destroy a PAVN communications wire network, they were engaged by PAVN resulting in 1 US killed, Troop D was inserted to support the platoon until the PAVN broke contact. On 10 May the Troop C aero-rifle platoon was inserted on Firebase Zon (16.278°N 107.313°E / 16.278; 107.313) to extract a downed UH-1H. From 10–12 May Troop A killed 8 PAVN and destroyed a .30 cal machine gun and a mortar while supporting the 369th Marines. On 12 May a Troop B helicopter destroyed a PAVN truck killing the driver. From 14–29 May Troop A patrolled Route 616 killing 5 PAVN and destroying a truck. On 23 May Troop B gunships killed 3 PAVN. On 28 May a Troop B LOH on a reconnaissance mission over the A Sầu Valley was hit by a Rocket-propelled grenade and exploded with both crewmen missing.[3]^:7–8

On 1 June Troop A teams attacked PAVN Base Area 611 in Laos, where they encountered heavy 37mm and 57mm antiaircraft fire, but killed 16 PAVN. On the same day Troop B gunships destroyed a truck and Troop D extracted a downed Troop C helicopter. On 6 June Troop B's aero-rifle platoon successfully extracted a downed AH-1G. On 7 June Troop B gunships killed 5 PAVN. On 9 June Troop B gunships destroyed 2 trucks. From 11–28 June Troop A supported Marine units, killing 18 PAVN. On 22 June Troop B gunship s killed 7 PAVN near Firebase Fuller. On 23 June Troop B's aero-rifle platoon successfully extracted a downed AH-1G. On 30 June a Troop A unit destroyed a .51 cal machine gun.[3]^:8–9

On 1 July Troop A helicopters received .51 fire over Route 616, engaged the position killing 4 PAVN and destroying the machine gun. On 4 July a Troop C LOH received antiaircraft fire and crash-landed north of the A Sầu airstrip, a UH-1H chase ship rescued the crew but also received fire and made a forced landing at Firebase Blaze and an AH-1G supporting the extraction was hit by ground fire and crashed. From 10–16 July Troop A killed 11 PAVN, while losing an LOH to ground fire. On the same day Troops B's aero-rifle platoon extracted a downed LOH from Firebase Zon. On 3 July Troop B gunships destroyed a truck south of the A Sầu airfield. On 8 July Troop B gunships killed 3 PAVN and destroyed a .51 cal machine gun. On 15 July Troop A gunships killed 10 PAVN and an AH-1G was hit by .51 cal fire and attempted to autorotate at Firebase Shepard and crashed in a river resulting in 1 crewman killed and 1 missing. On 16 July a Troop B LOH was shot down. On 19 July Troop A killed 4 PAVN while supporting the 258th Marines and later that day attacked a PAVN position killing 14 PAVN and destroying two .30 cal machine guns. From 19 to 29 July Troop B killed 11 PAVN and destroyed a truck in the A Sầu Valley. On 25 July Troop A and tactical air support killed 7 PAVN and destroyed two .51 cal machine guns and 4 bunkers in the Đa Krông Valley. On 30 July Troop A gunships killed 8 PAVN and destroyed a .30 cal machine gun.[3]^:9–10

From 1–9 August Troop A reconnaissance flights encountered heavy antiaircraft fire with one AH-1G shot down while 5 PAVN were killed. On 6 August Troop B's aero-rifle platoon was inserted to successfully extract a downed CH-47. On 7 August Troop B gunships destroyed a .51 cal machine gun. On 13 August after taking ground fire Troop C directed tactical airstrikes against a PAVN base resulting in 14 secondary explosions. On 16 August a Troop A patrol killed 6 PAVN and destroyed a .51 cal machine gun. On 19 August a Troop B gunship killed 2 PAVN. On 20 August a Troop A helicopter was shot down but successfully extracted. On 22 August a Troop A LOH was shot down. From 24 to 30 August Troop A killed 22 PAVN and captured 1 along Route 608.[3]^:10 On 6 September Troop A killed 13 PAVN and destroyed a .51 cal machine gun. On 8 September Troop C gunships killed 1 PAVN. On 9 September Troop C gunships killed 1 PAVN. On 10 September Troop D successfully extracted a downed medevac helicopter. On 11 September Troop A located 4 PAVN 122mm artillery pieces and these were destroyed with HEAT rockets. On the same day at OP Hickory a Troop B UH-1H detonated a mine resulting in 1 US killed and Troop C gunships destroyed a truck. Between 11 and 17 September Troop A units destroyed 6 trucks and an artillery tractor. On 12 September Troop B gunships destroyed an 81mm mortar.

On 13 September a Troop C LOH was shot down and destroyed. On 15 September the Hac Bao Company were inserted on Route 608 destroying a large PAVN weapons and supply cache. From 22–29 September in operations over Route 616 and the Đa Krông Valley Troop A destroyed 8 trucks and killed 1 PAVN with one LOH shot down.[3]^:11–2

On 1 October Troop A gunships killed 1 PAVN. On 2 October after taking heavy fire Troop A gunships killed 4 PAVN. On the same day Troop B gunships killed 2 PAVN. On 4 October Troop C gunships killed 1 PAVN.[3]^:12 The 2/17th Cavalry claimed 1339 PAVN killed and 2 captured and 96 weapons destroyed and 27 individual and 9 crew-served weapons captured for US losses of 31 killed.[3]^:13