Leo M. Luna passed away Thursday surrounded by his family.Leo was born in Sacramento. He served in the USMC from 1948-52. He then worked for US Steel in Pittsburg for 18 years. After he retired from the mill, he pursued a career as a dental technician. He graduated Post City College, San Francisco in 1970. Leo attended Ultratech School of Dental Technology in Concord and became one of the school's instructors. Leo was a self-employed dental technician for Lodi Dental Lab.Leo is survived by his wife of 59 years Angelina Luna, his children Eleanor, Patricia (Tom) and Leo Jr. (Kathi). He has 12 grandchildren, 20 great-grandchildren and a large loving family.Memorial mass will be held on Wednesday, June 6, 2012 at 11:00am at Church of the Good Shepherd.