The SWAT teams are usually called to deal with hostage situations. They plan the entry into the building where the hostages are being held. They look closely at all building entrances to choose the best option. They make use of equipment such as rappelling ropes, nightvision goggles, thermalvision goggles, a tactical shield, flashbang and smoke grenades, snake cameras small cameras that fit under doors and into very small holes, among others.