US pilot Bill Leaf performs during the "2013 Ilopango Air Show", at the Ilopango air base in the city of San Salvador, capital of El Salvador, on Jan. 26, 2013. The show was held to raise funds for the National Children's Hospital Benjamin Bloom. (Xinhua/Oscar Rivera)
Guatemalan pilot Martin Keller performs during the "2013 Ilopango Air Show", at the Ilopango air base in the city of San Salvador, capital of El Salvador, on Jan. 26, 2013. The show was held to raise funds for the National Children's Hospital Benjamin Bloom. (Xinhua/Oscar Rivera)
US pilot Skip Stewart performs during the "2013 Ilopango Air Show", at the Ilopango air base in the city of San Salvador, capital of El Salvador, on Jan. 26, 2013. The show was held to raise funds for the National Children's Hospital Benjamin Bloom. (Xinhua/Oscar Rivera)
Helicopters MD-500E of Salvador attend the "2013 Ilopango Air Show", at the Ilopango air base in the city of San Salvador, capital of El Salvador, on Jan. 26, 2013. The show was held to raise funds for the National Children's Hospital Benjamin Bloom. (Xinhua/Oscar Rivera)
US pilot Skip Stewart performs during the "2013 Ilopango Air Show", at the Ilopango air base in the city of San Salvador, capital of El Salvador, on Jan. 26, 2013. The show was held to raise funds for the National Children's Hospital Benjamin Bloom. (Xinhua/Oscar Rivera)