PD&A experts have testified and consulted in thousands of criminal matters, many involving high profile national and international cases.

• Serial killers, including Jeffrey Dahmer, Gerald Gallego, Robert Berdella, William Bonin, the I-5 Strangler, Richard Cottingham, Son of Sam, Douglas Daniel Clark, Arthur Shawcross, Cleophus Prince, Joel Rifkin, Ricardo Caputo, Robert Shulman, the Zodiac, Gerald Parker, the Green River murders, John McRae, the New York Zodiac, Kendall Francois, D.C.’s Shotgun Stalker, Joe Metheny, Andrew Urdiales, Paul Runge, Larry Gene Bell, Charles Ng, Paul Reid, Cary Stayner, Harvey Miguel Robinson, the D.C. Snipers, the Phoenix Shooters, and Joseph Edward Duncan III

• Workplace mass murders, including Standard Gravure in Louisville, General Dynamics in San Diego, and Xerox in Honolulu

• School shootings at Columbine High School and other schools in Colorado, California, Oregon, and Georgia

• Child killings, including Polly Klaas and JonBenet Ramsey

• Infanticide cases, including Amy Grossberg and the Prom Mom

• Attacks at the White House, the U.S. Capitol, the Today Show, abortion clinics, and churches

• Assassinations and attempts against Congressman Allard Lowenstein, President Reagan, and Congresswoman Gabrielle Giffords

• War crimes on behalf of the United Nations International Criminal Tribunal for the former Yugoslavia, in The Hague, the Netherlands

• Stalkers of John Lennon, Rebecca Schaeffer, Cher, Olivia Newton-John, and Michael Jackson

• Bombers, including Walter Leroy Moody, the Unabomber, the Mail Box Bomber, and bombings at the World Trade Center, Oklahoma City, Atlanta Olympics, and Boston Marathon

• Murders, including domestic violence, workplace homicide, campus homicide, robbery murder, sexual homicide, gang violence, juvenile offenders, prison homicide, and the prosecutions of the Menendez brothers, John DuPont, and Susan Smith

• FBI Top Ten Fugitives, including Alton Coleman, Michael Wayne Jackson, and Eric Rudolph

• Hostage and barricaded subject situations, including the Branch Davidian’s, Ruby Ridge, and the Freeman Standoff