Virtual reality simulation hones law enforcement hostage rescue techniques
ALBUQUERQUE, N.M. -- Modern movie superheroes rescue hostages by evading hailstorms of bullets and harming only evil-doers who resist.
In the flesh-and-blood world, people who sign on to be cops -- whether city, state or FBI -- need extensive training to make the split-second judgments that would protect themselves, rescue the innocent, and disarm or disable hostage-takers.
To widen access to such training, lessen its cost yet broaden its focus, a virtual reality simulation that allows two-person law enforcement teams to grip guns, don virtual reality glasses, and burst into the harsh environment of hostage-takers and their victims has been created in prototype by researchers at Sandia National Laboratories.
The simulation, called VRaptor, was demonstrated at the IEEEÃs Virtual Reality Annual International Symposium, held in Albuquerque in early March.
A participantÃs job is to determine who are the hostages and save them, take prisoner those kidnappers who surrender, and shoot those who fire weapons.
ìItÃs less like a video game and more like a flight simulator,î said Sharon Stansfield, who leads the Sandia project. ìIt familiarizes law enforcement teams with scenarios.î
Four virtual reality characters -- two men, two women -- are sitting, standing or lying in a room when a law enforcement team breaks in through a wall or door, delivering a concussion grenade.
The scenario, constructed with input from the FBI, is a sparsely furnished apartment -- kitchen table, chairs, living room couch, and an empty bookcase.
Human participants are monitored by sensors placed on their backs and hands. Signals from this electronic equipment determine the perspectives through which each participant sees events. Humans are represented in the scenario by cartoon-like figures called avatars.
Just as a flight simulator may not distinguish between types of trees lining a runway but clarifies relevant details like the line of the horizon, VRaptor does not offer detailed images of people or furniture but provides the most important visual clues -- a falling or rising body, lifted arms, an outthrust weapon.
ìThe advantage is that multiple human participants can appear in embodied forms within a common, shared virtual environment,î says Sandia researcher Dan Shawver. ìThey can experience situations in which they otherwise would have no opportunity to practice effective responses.î
Outcomes are unpredictable because the sequences are not preprogrammed. The roles and behaviors of the characters are decided by a human trainer for each session. The graphics are computed in realtime. Unlike a video game thereÃs no higher ëlevelà to which to progress, and thereÃs no way to get familiar with the game enough to memorize its outcomes, says Stansfield.
ìWe feel our model represents an improvement over current law enforcement training methods in ëshoot houses,à î says Stansfield. ìShoot houses allow agents to use real guns to fire on mannequins, but the mannequins donÃt do anything, theyÃre just there.î Some cardboard mannequins do pop up, but thatÃs all they do.
VRaptor is an acronym for virtual reality assault planning, training, or rehearsal. The program as it becomes more complicated may eventually be used for evaluating assault plans, training for a variety of rescue circumstances, or rehearsing a particular scenario.
The work is in its second year of funding by SandiaÃs Laboratory-Directed Research and Development program, which finances speculative defense-related research.
Sandia is a multiprogram DOE laboratory, operated by a subsidiary of Lockheed Martin Corp. With main facilities in Albuquerque, N.M., and Livermore, Calif., Sandia has major research and development responsibilities in national security, energy, and environmental technologies and economic competitiveness. # Visuals: dramatic, available. Media contact: Neal Singer, 505-845-7078, [email protected] Technical contact: Sharon Stansfield, 505-844-1396, [email protected]
Sandia National Laboratories' World Wide Web home page is located at http://www.sandia.gov. News releases, fact sheets, and news tips can be found at http://www.sandia.gov/media/whatnew.htm. The Sandia Lab News Online Edition is at http://www.sandia.gov/LabNews/LabNews.html.
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