Derry is a borough in Westmoreland County in Pennsylvania, 45 miles (72 km) east of Pittsburgh.

[8] A helicopter crash into a crowd assembled for a festival at St. Joseph's Catholic Church in Derry killed eight people and injured 18 others on Labor Day, 1978.

St. George was a martyr, one of the most famous in Christendom, and is noted for refusing many bribes and offerings to renounce his faith.

The heart, in the upper left corner of the cross, is sectioned with a bar rising up that signifies love for God.

The lower part of the shield is draped with noble ermine as a backdrop for the two charges that respectfully represent community values and Derry’s rich railroad heritage.

The railroad theme is carried on at the top of the design with a crest emblazoned with the borough’s name and establishment date.

The lower banner motto resonates the strong foundation of community reserved for the families that call the borough home and an acknowledgment of the greatness of the country in which Derry is located.

The crest portraits a very noble ideal of community, heritage, charity and endless love for God in the face of danger.

The climate in this area is characterized by hot, humid summers and generally mild to cool winters.