[smokingfrog]

As da Po-Po cordoned off the street in front of the crime scene, turning back traffic, residents came out in their yards, but most said they didn’t see or hear nuttin'.

There was no description of the purp, as he is apparently an invisible man and using a silenced weapon.

[GladesGuru]

They saw nothing from their porches.

They heard nothing from their porches.

They say nothing from their porches.

Question: What is the correct name for “them”?