What formal(enumerated) and informal presidential powers did Truman use in dealing with the berlin blockade?

Question

What presidential powers did Truman use when he made the decision to airlift supplies into Berlin during the blockade (1948-1949)?

Answer 1

He used his power as Commander In Chief of the U.S.'s military after conferring with his Cabinet and leaders of Congress.
Since The Berlin Airlift was a peace time humanitarian action being taken by an international coalition, there was no declaration of war, hostility or treaty which would have required action by Congress.

Answer 2

Try asking in History, they like to answer homework questions.