Have DSP satellites detected UFOs?

The Defense Support Program (DSP) satellites were a series of infrared sensors orbiting 22,000 miles above the earth. The first satellite was launched in November of 1970. Originally DSP was intended to provide early warning of a Soviet ICBM launch. Over the decades the satellite has been upgraded to provide several types of technical intelligence that would be hard to get any other way.
In 1983, President Ronald Reagan revived missile defense with his Strategic Defense Initiative. Commonly known as "Star Wars," SDI was a program of vigorous research focused on advanced defensive technologies with the aim of finding ways to provide a better basis for deterring aggression, strengthening stability, and increasing the security of the United States.
In 1984, Lee Graham worked as an electronics system technician for Aerojet, a prime contractor to the U.S. Air Force in developing DSP Satellites.
Graham made an inquiry to the Foreign Technology Division of the U.S. Air Force if the satellite system he worked on could and had detected UFOs.
Below is an excerpt from the response given by Headquarters Space Command of The U.S. Air Force.

Ronald Reagan was the first President of the United States to talk openly about the possibility of an alien invasion from outer space. On five separate occasions, Reagan made references to an outside alien threat and the unifying effect it would have on us all. One such reference was made in September 1987 while addressing the General Assembly of the United Nations. Towards the end of his speech the President said: "Perhaps we need some outside, universal threat to make us recognize this common bond." Reagan continued, "I occasionally think how quickly our differences worldwide would vanish if we were facing an alien threat from outside this world. And yet, I ask is not an alien force already among us?" Reagan then backpedaled from the statement by asking another question: "What could be more alien to the universal aspirations of our peoples than war and the threat of war?"