![At former U.S. bases in Vietnam, a potent poison is clear and present danger | DTiNews - Dan Tri International, the news gateway of Vietnam At former U.S. bases in Vietnam, a potent poison is clear and present danger | DTiNews - Dan Tri International, the news gateway of Vietnam](http://i.dtinews.vn/stores/news_dataimages/anhpt/122009/12/15/5095538420091212155617.jpg)
At former U.S. bases in Vietnam, a potent poison is clear and present danger | DTiNews - Dan Tri International, the news gateway of Vietnam
![Black and white photograph, showing two Bell UH-1 Iroquois ('Huey') helicopters, either landing or taking off from a military base, with several men in an open Jeep and barracks or administrative buildings Black and white photograph, showing two Bell UH-1 Iroquois ('Huey') helicopters, either landing or taking off from a military base, with several men in an open Jeep and barracks or administrative buildings](https://c8.alamy.com/comp/RFH2ET/black-and-white-photograph-showing-two-bell-uh-1-iroquois-huey-helicopters-either-landing-or-taking-off-from-a-military-base-with-several-men-in-an-open-jeep-and-barracks-or-administrative-buildings-visible-in-the-background-photographed-during-the-vietnam-war-1968-RFH2ET.jpg)
Black and white photograph, showing two Bell UH-1 Iroquois ('Huey') helicopters, either landing or taking off from a military base, with several men in an open Jeep and barracks or administrative buildings
![American military base during the Vietnam war, with fox holes surrounded by sandbags, 1968 Stock Photo - Alamy American military base during the Vietnam war, with fox holes surrounded by sandbags, 1968 Stock Photo - Alamy](https://l450v.alamy.com/450v/wb8chb/a-us-army-chinook-helicopter-lifts-off-from-a-forward-military-base-during-the-vietnam-war-in-1966-wb8chb.jpg)