system
Given the following post, respond as if you're commenting on Reddit:
human
[Police Procedural TV Shows]When they find a suspect a raid the house with a tactical team, why does the main character lead the way with just a bulletproof vest and a pistol while the rest of the team has body armor and automatic weapons?

Even if the team has their personal gear and just doesn’t have any extra body armor or helmets, seems like they would at least have an extra weapon better than a pistol.
gpt
The tactical team are backup in case things go south, or the lead detective (or whatever job they hold) is faced with unexpectedly high levels of opposition. They're also an intimidation tactic - their presence means it's less likely any numbers inside the location will fight back. They can also pick off, or pick up, any runners while the lead officer goes straight for the priority target. Generally speaking they're not going in there to kill all suspects; they want to take people alive, so charging in with an assault rifle is detrimental to their actual intention compared to having something smaller and more controlled.

But the person in charge wants to be in first because (a) they know what they're looking for and don't want some armoured-up SWAT guy accidentally standing on something vital and (b) they have a better chance of assessing the situation quickly because they're not encumbered with full tactical gear.