He died unexpectedly of a heart attack early in the morning of July 3, 1967 at age 62.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: He died unexpectedly of a heart attack early in the morning of July 3, 1967 at age 62. ### Response: .