Mark E. Ruba , 63,of Sioux City, Iowa passed away on Friday February 01, 2013.Mark was born in Sioux City, Iowa on June 2, 1949 to Edwin and Maxine (Nash) Ruba. He was a graduate of Kingsley-Pierson High School class of 1967 and received his Bachelors Degree at Briar Cliff University in 1971. He was a retired US Senior Customs Official for the Dept. of Homeland Security at JFK Int'l Airport. He devoted several years of service to VISTA. He was a loyal contributor to numerous charities. Mark loved fishing, photography, reading, music, Twin Bings, and spending time with family and friends.Preceding him in death were his parents, his siblings Darlene, Larry, Ronald, and Jerry Ruba, and Nolan Harrison. He is survived by Sisters Karen (Ruba) Meyer, Sandy (Wayne) Mills, brother Denny (Lisa) Ruba, sister-in-laws Pat Ruba and Joyce Harrison. Mark was a devoted son of Maxine (Nash) Ruba, beloved brother, uncle, great uncle, cousin, brother-in-law, and friend.