| In addition, actors were used by 15 schools, volunteers by 14, manikins by all 19, videos by 11, and simulators by four. |
| Constructive, virtual training simulations and simulators should replicate the threat realistically. |
| The idea sprang from the cost to convert the simulators to friendly lighting for night vision goggles. |
| They have built gondolas for airships, flight simulators and floating offices, but Jim's boat posed a real challenge. |
| The astronauts practice on simulators such as a mock-up of the space shuttle's crew compartment. |
| Here all concerns about aid, suasion, and civilizational prejudices were drowned out by shrieking simulators and thundering tanks. |
