Think about the events below. Think about the Article. Which took place first?

Lieutenant Roger "Bill" Terry was cleared of all charges.
Groups of airmen tried to get into the supervisors' club.
Harry Truman ended racial discrimination in the military.
The Tuskegee heroes received Congressional Gold Medals.

To determine the chronological order of the events mentioned, it is necessary to consider the historical context. Here is the possible chronology:

1. Harry Truman ended racial discrimination in the military.
2. Groups of airmen tried to get into the supervisors' club.
3. The Tuskegee heroes received Congressional Gold Medals.
4. Lieutenant Roger "Bill" Terry was cleared of all charges.

Harry Truman's executive order to end racial discrimination in the military, known as Executive Order 9981, was issued on July 26, 1948. This would most likely be the earliest event among the options.

Groups of airmen trying to get into the supervisors' club could be related to the greater racial integration efforts as a consequence of Truman's order. This event might have taken place soon after the executive order.

The Tuskegee heroes receiving Congressional Gold Medals is likely a later event. The recognition of their contributions happened in 2006, long after the integration efforts in the military had taken place.

Lieutenant Roger "Bill" Terry being cleared of all charges is not necessarily connected to the other events directly, and there is no specific timeframe mentioned. Therefore, it is difficult to determine whether this event occurred before, after, or independently of the others.

Thus, the possible chronological order would be:

1. Harry Truman ended racial discrimination in the military.
2. Groups of airmen tried to get into the supervisors' club.
3. The Tuskegee heroes received Congressional Gold Medals.
4. Lieutenant Roger "Bill" Terry was cleared of all charges.

so the answer is?

Based on the provided events and the historical context, the chronological order would most likely be:

1. Harry Truman ended racial discrimination in the military.
2. Groups of airmen tried to get into the supervisors' club.
3. The Tuskegee heroes received Congressional Gold Medals.
4. Lieutenant Roger "Bill" Terry was cleared of all charges.