Thomas Kingsley wrote letters home from Vietnam describing his experiences. In the early letters, his mood seems somber as he adjusts to the challenges of serving in Vietnam. Later letters to different audiences, such as his parents and a friend, have differing perspectives on the same subjects. The last two letters may have shown if his perspective changed or challenges intensified over time, but specifics are not provided. Thomas Kingsley likely faced difficulties with the conditions of war and being away from home in Vietnam.