Jack Raymond Janney (June 17, 1924 – October 9, 2006), born in Alamosa, Colorado, was a U.S. structural engineer and an innovator in the understanding of structural behavior and a recognized leader in the investigation of structural collapses. Janney's love of mathematics and science spurred his decision to become an engineer, and in 1942, he enrolled in the College of Engineering at the University of Colorado at Boulder. After only one semester, Janney left college and enlisted in the Navy where he became a decorated pilot during World War II. After the war, Janney returned to the University of Colorado at Boulder where he earned his bachelor's degree in architectural engineering in 1948 and his master's degree in structural engineering in 1950. Janney's graduate-school thesis on prestressed concrete was recognized as one of the first comprehensive papers written on the subject in the United States. Subsequently, the Portland Cement Association (PCA) hired Janney to conduct research on prestressed concrete at its newly constructed laboratories in Skokie, Illinois, where he worked from 1950 to 1956. During his time with the Portland Cement Association Janney published a journal entitled "Nature of Bond in Pre-Tensioned Prestressed Concrete," which displayed results from numerous experiments he performed to determine the effectiveness of prestressed concrete. One of the experiments Janney performed on prestressed concrete was called the "Prism Test." Through the "Prism Test," Janney gained a lot of new and valuable knowledge on the effects of prestressed concrete and he was able to develop superior methods of creating very strong prestressed concrete for engineering during that time period. In 1956, Janney started his own consulting engineering firm that would eventually become Wiss, Janney, Elstner Associates, Inc. (WJE). The company today employs 470 professionals in nineteen offices nationwide. Janney's first project as a consulting engineer was on behalf of the Illinois State Toll Highway Authority, overseeing the manufacturing of precast, prestressed concrete girders for bridges for the tollway. In WJE's early years, Janney pioneered the use of three-dimensional scale models for determining the distribution of strains and stresses in structures, before the advent of computers and structural analysis programs. Janney performed more than 60 scale-model studies from 1958 to 1969 on many important structures, including Chicago's First National Bank, the Kodak Pavilion at the 1964 New York World's Fair, and the hyperbolic paraboloid roof for TWA's maintenance hangar in Kansas City, Missouri. WJE needed to design, construct,