Natalie Jaresko – former Ukrainian Minister of Finance Boris Lushniak – former Acting Surgeon General of the United States Julia Mullock – Imperial High Princess of Korea Roman Popadiuk – former US Ambassador to Ukraine Victoria Spartz – former Indiana state Senator, Member of the U.S. House of Representatives from Indiana's 5th district Ulana Suprun – former acting Ukrainian Minister of Healthcare Timothy Tymkovich – US Court of Appeals for the Tenth Circuit, Chief Judge Kateryna Yushchenko – former US State Department Official and former First Lady of Ukraine Engineers and Business Bohdan Bejmuk – aerospace engineer Martin Cooper – American inventor, "father of the cell phone", of Jewish descent William Dzus – inventor of Dzus turnlock fasteners for aircraft Paul Eremenko – former Google executive Nick Holonyak – inventor of the LED Andrew Kay – President and CEO of now defunct Kaypro Jan Koum – founder of WhatsApp, of Jewish descent Max Levchin – co-founder of PayPal, of Jewish descent Daniel Milstein – founder and CEO of Gold Star financial group; author of 17 Cents and a Dream Igor Pasternak – CEO of Aeros Michael Pocalyko – investment banker Jay Pritzker – entrepreneur and founder of the Hyatt Hotel chain, of Jewish descent Lubomyr Romankiw – inventor; engineer Stephen Timoshenko – engineer, reputed to be the father of modern engineering mechanics Harold Willens – Jewish businessman, nuclear freeze activist, political donor Harry Winston – businessman; jeweler Jacob Millman – Professor, Columbia University, Author, Millman's Theorem Military officers and war heroes Jeremy Michael Boorda – US Admiral-Chief of Naval Operations Bohdan Danyliw – US Brigadier General and staff judge advocate for the Air Force Systems Command Myron F. Diduryk – Vietnam War Silver Star recipient Samuel Jaskilka – General-Assistant Commandant of the US Marine Corps Orest L. Kohut – Brigadier General US Air Force Leonid Kondratiuk – Brigadier General in the Massachusetts Organized Malitia Walter A. Kostecki M.D. – US Army Medical Corps Major; World War II POW and recipient of the Legion of Merit, the Bronze Star, two Purple Hearts and two Army Commendation Medals Nicholas S. H. Krawciw – US Army Major General William Lukash M.D. – Rear Admiral and Physician in the Naval Medical Corps; White House Physician for four sitting Presidents, from Lyndon B. Johnson to Jimmy Carter Stephen M. Mellnik – US Army Brigadier General; World War II POW Nicholas Minue – World War II