00:00In video games, when you see a flashbang flying toward you, most people instinctively turn away
00:04or duck behind cover to avoid its effects. But in reality, these tactics are basically
00:09useless against actual flashbangs, especially in enclosed indoor spaces, where they leave
00:14targets virtually no room to escape. The flashbang, officially called a stun grenade or flashbang
00:19grenade, is a non-lethal weapon specifically designed to strip targets of their ability to
00:23resist. In the 1970s Britain's Special Air Service, the SAS, pioneered the development
00:29of this equipment. It subsequently became widely adopted in counterterrorism operations,
00:34hostage rescue missions, and close quarters indoor combat. Its core principle exploits
00:38instantaneous sensory overload of both sound and light, causing the human body's perception
00:42system to malfunction within a very short time frame. The instant of detonation releases blinding
00:47light reaching 6 million to 8 million candela in intensity. This typically produces approximately
00:523 to 5 seconds of forced blindness. Inside a room, walls, floors, and ceilings continuously
00:58reflect light rays, allowing intense brightness to blanket the entire space. Therefore, even with
01:03eyes shut, the powerful light still penetrates through eyelids, rapidly saturating retinal
01:08photoreceptor cells. Simultaneously, an enormous sound blast exceeding 170 decibels combined with
01:14pressure shock waves causes tinnitus, dizziness, and complete loss of balance within seconds.
01:19And in close quarters breaching operations, these several seconds of chaos are precisely the
01:23window's special forces need. Before targets recover their judgment and awareness, breaching
01:28personnel can rapidly enter the room and complete their takedown.
