Rockne Krebs

He did the same type of sculptures nationwide in 25 cities and later on he represented United States at Expo '70 in Osaka, Japan.

On one such project he erected lasers at the Mount Wilson's observatory and its beam stretched for eight miles toward Caltech.

[1] In 1974 he set up temporary laser installations aiming beams across the Potomac River onto the Kennedy Center in Washington, DC; and down the McKeldin Mall onto the Administration Building at the University of Maryland.

[3] In 1980 he created another sculpture called The Source which was erected in Washington D.C. and the same year looked for approval from Secret Service before he can use argon and krypton lasers over the Lincoln Memorial.

In 2005 he did his last project called the Day Star which was erected in Bethesda, Maryland[3] before he died from emphysema on October 10, 2011, at the Washington Hospital Center.