On January 29, 1965, a left-wing radical group bombed three American warplanes being retrofit

Retrofit

Retrofitting refers to the addition of new technology or features to older systems.* power plant retrofit, improving power plant efficiency / increasing output / reducing emissions...

ted at an Edmonton airport.

Background

The American military sent 112 planes to the Edmonton Industrial Airport, where they were to be repaired by Northwest Industries.

Although initial reports pointed out that 15 of the planes had run spy missions over post-Revolution China, the attack was said to be in protest of the Vietnam War

Vietnam War

The Vietnam War was a Cold War-era military conflict that occurred in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. This war followed the First Indochina War and was fought between North Vietnam, supported by its communist allies, and the government of...

. It is believed to have been one of the first attacks ever citing American involvement in Vietnam as its motive.

Attack

A security guard was shot with a rifle, when the perpetrator entered the airport.

Two F-84

F-84 Thunderjet

The Republic F-84 Thunderjet was an American turbojet fighter-bomber aircraft. Originating as a 1944 United States Army Air Forces proposal for a "day fighter", the F-84 flew in 1946...

 jets were destroyed, and a third heavily damaged by the bombing.

Following the attack, an unemployed German immigrant was arrested by police who were led to his location by police dog

Police dog

A police dog, often referred to as a "K-9 dog" in some areas , is a dog that is trained specifically to assist police and other law-enforcement personnel in their work...

s, and charged with the murder of the security guard.