The legend along the upper edge of the challenge coin says "15 TH ENGINEER COMPANY COMBAT SUPPORT EQUIPMENT". Along the lower edge the legend says "ROAD DAWGS" (the unit nickname). The challenge coin has a castle with two turrets and a gate in the center, a traditional combat engineer motif. Over the wall on the left side between the left turret and the gate hangs the head of a bull dog. Below the castle it says "PANAMA". Under the "PANAMA" with smaller letters in a semi-circle it says "ENGLAND FRANCE JAPAN VIETNAM". The coin has a smooth plain raised edge, and a plain and smooth background.

The legend along the upper edge of the medal says "536TH ENGINEER BATTALION". Along the lower edge the legend says "324TH SUPPORT GROUP". The center of the medal has the insignia of the 536th Engineer Battalion. The insignia is an elongated shield. It has lines in the shape of an hourglass dividing the shield. On the right and left are what may be ears of wheat. Inside the hourglass in the lower half is a crossed pick and shovel. In the top half is another device which I am not sure what it is. It is vaguely sailboat shaped. Under the shield is a banner with the motto "NATION BUILDERS". On the left side of the insignia is the legend "UNITED" and to the right of the insignia is the word "STATES". On a second line, on the left the medal says "ARMY" and on the right it says "SOUTH". Below the insignia is a raised rectangle where the name of the recipient could be engraved. The coin has a smooth plain raised edge, and a plain and smooth background.

Searching the web, I have not been able to find much about any of the units listed on this challenge coin. I have found some minimal references to the 536th Engineer Battalion. This battalion participated in Operation Just Cause, but consisted of three detachments. I have not found any references to the 15th Engineer Company Combat Support Equipment at all.

The 536th Engineer Battalion also participated in Operation Promote Liberty, to rebuild Panama after the war and included engineering assistance projects. Exercise Fuertes Caminos-Panama '90 (Spanish for "strong roads") completed 75 projects including refurbishing 46 schools, three hospitals, 14 bridges and 500 kilimeters of roads, etc. between April and June 1990. Exercise Cosecha Amistad '90 (Spanish for "Harvest Friendship") completed another 44 projects including 19 schools, seven health clinics, 13 wells, 23 kilometers of roads, etc. between July and December 1990. The 536th Engineer Battalion was an important part of both these exercises. The 536th Engineer Battalion was based out of Panama at least from 1989 to 1993, and probably longer.