From Panel 22E - Line 36 on the Vietnam Wall:
GARY EVANS BEESLEY, PFC - E3 - Army - Regular , 9th Infantry Division
Length of service 1 years
His tour began on Dec 1, 1966
Casualty was on Jun 22, 1967
In DINH TUONG, SOUTH VIETNAM
HOSTILE, GROUND CASUALTY due to MISADVENTURE
Body was recovered
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On September 11, 2022, Vietnam US Navy veteran Bruce Garver added the following information (1) from "the U.S., Vietnam War Military Casualties, 1956-1998":
Name: Gary Evans Beesley
Birth Date: 31 Jan 1946
Death Date: 22 Jun 1967
Gender: Male / Age: 21 / Race: Caucasian (White)
Home City: St. Louis / Home State: Missouri
Religion: Lutheran (Missouri Synod)
Marital Status: Single (Spouse Not Listed) (Single)
SSN/Service # 17726035
Citizen Status: U.S.
Death Date: 22 June 1967 / Processed Date: June 1967
Casualty Country: Republic of Vietnam (South Vietnam)
Casualty Type: Hostile - Killed
Casualty Reason: Misadventure
Casualty Air: Ground Casualty
Body Status: Body Recovered
Service Branch: Department of the Army
Component: Regular (Regular Army), 9th Infantry Division.
Military Pay Grade: Private First Class (U.S. Army)
Province: Military Region 4 - Dinh Tuong
Length of Service: 01 year
Service Occupation: Infantry Operations and Intelligence Specialist (ARMY)
Data Source: Combat Area Casualties Current File
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(2) From the 1950 U. S. Federal Census:

Name: Gary Beesley
Age: 4
Birth Date: abt 1946
Gender: Male
Birth Place: Missouri
Marital Status: Never Married (Single)
Relation to Head of House: Son
Residence Date: 1950
Home in 1950: Glendale, St Louis, Missouri, USA / Same House: Yes
Father Birth Place: USA
Mother Birth Place: USA
School Completed: O / Grade Completed: No / School Attendance: No
Household Members Age Relationship
Sherwood Beesley 38 Head
Ruth Beesley 35 Wife
Phillip Beesley 8 Son
Phyllis Beesley 7 Daughter
Gary Beesley 4 Son