English to Spanish Tech/Engineering Mechanics / Mech Engineering Classic disposable smoke generators

Smoke drills
Some instructors require trainees to carry sand bags or saw wood to become accustomed to the breathing restrictions encountered while wearing a mask. The glow from a highway flare or the flame and heat from a barricaded fire gives valuable practice in sizing up a fire and its location through the smoke by a faint glow or tell-tale wave of heat. Regular drills teach men to handle themselves and their equipment with a minimum of effort and panic enabling them to concentrate on their assigned jobs of sizing up and fighting fires or making rescues.