Police Pet Peeve #3
Most detectives in cop shows lead the way on a high risk house entry.

While it does make it more exciting for your main character to lead the way on a high risk building entry, the truth of the matter is, if they work for a large enough department, SWAT will usually make the high risk entries.  If time is of the essence, or if the entry is in the jurisdiction of a small town cop, then patrol officers will make the entry.

Sure, sometimes, if the detective gets to the scene in time, and if he/she can find their vest, and if they can locate their gun in the trunk, they might be on the entry team.  ( Just kidding guys, I used to be a detective myself…and I love to jerk their chains)