Freeze Grenade can unexpectedly freeze marines that have been knocked out and incapacitated.

[IAFCrash]

To test, we can set these convars below:

rd_allow_revive 1
asw_skill_grenades_freeze_duration_base 100

Now kill a marine ( makes it incapacitated ), and then throw the marine a freeze grenade, and finally revive the marine.
And now you can see the marine is frozen.

[IAFCrash]

Maybe we also need to test this with extinguisher and sentry_top_icer (CASW_Extinguisher_Projectile) when rd_extinguisher_freeze_amount is not 0?

[IAFCrash]

To test, we can set these convars below:

rd_allow_revive 1
asw_skill_grenades_freeze_duration_base 100

Now kill a marine, and then throw the marine a freeze grenade, and finally inhabit the marine. And now you can see the marine is frozen.

Additionally, if a marine throws a freeze grenade and then becomes incapacitated before the freeze grenade explodes, the freeze grenade can freeze all the marines( including incapacitated marines, they will be frozen after being revived ).