When they did layoffs at my job years ago We got word it was going down, then just a few hours later HR showed up with 5 police officers. The people who got let go got handed their last check, told to grab their personal items under the watchful eye of a police officer breathing down their neck, then escorted off the property like they were criminals.

they got rid of about 15% of the employees this way, they locked all hiring, promotions, and raises for 5 years. Needless to say morale took a major dump.