Simon "Si" Ramo is an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 physicist, engineer, and business leader. He led development of microwave and missile technology and is sometimes known as the father of the intercontinental ballistic missile

Intercontinental ballistic missile

An intercontinental ballistic missile is a ballistic missile with a long range typically designed for nuclear weapons delivery...

 (ICBM). He has been partly responsible for the creation of two Fortune 500 companies of the 1970s; Ramo-Wooldridge (TRW

TRW

TRW Inc. was an American corporation involved in a variety of businesses, mainly aerospace, automotive, and credit reporting. It was a pioneer in multiple fields including electronic components, integrated circuits, computers, software and systems engineering. TRW built many spacecraft,...

 after 1958) and Bunker-Ramo

Bunker Ramo Corporation

Bunker Ramo Corporation was founded by George M. Bunker and Simon Ramo in 1964, jointly owned by Martin-Marietta and Thompson Ramo Wooldridge TRW . The resulting company, Bunker-Ramo, was based in Trumbull, Connecticut....

 (now part of Honeywell

Honeywell

Honeywell International, Inc. is a major conglomerate company that produces a variety of consumer products, engineering services, and aerospace systems for a wide variety of customers, from private consumers to major corporations and governments....

).
Ramo was born in Salt Lake City, Utah

Salt Lake City, Utah

Salt Lake City is the capital and the most populous city of the U.S. state of Utah. The name of the city is often shortened to Salt Lake or SLC. With a population of 186,440 as of the 2010 Census, the city lies in the Salt Lake City metropolitan area, which has a total population of 1,124,197...

, and is of Sephardic descent.