Tom Irvine earned B.S. and M.S. degrees in engineering science from Arizona State University, in 1985 and 1987, respectively. He worked at Orbital Sciences Corporation in Chandler, Arizona, for 11 years as a full-time employee, and for 9 years as a consultant. He derived the shock and vibration levels and performed hands-on testing for the first Pegasus launch vehicle, which flew in 1990. He has analyzed flight accelerometer data from numerous launch vehicles, as well as ground separation tests. He has posted hundreds of tutorial and software programs at his Vibrationdata website, covering shock, vibration, acoustics, structural dynamics, and signal processing. He is currently a scientist at Dynamic Concepts, Inc., in Huntsville, Alabama. He is also an industry representative for the NASA Engineering & Safety Center (NESC) Loads and Dynamics Technical Disciplines Team. Aside from engineering, he is involved in service projects such as making microfinance loans to entreprenuers in third-world countries.