The KHON article I linked above says LE used bloodhounds to search the property. Did they search all five floors (hallways, public areas) of the apartment building or just the exterior?
That same article describes when they arrived home from Hawaii & when Melissa went back to work, but does not mention her husband. The natural flow would be to include that same information about him. There wouldn't need to be details of where he works, just when he went back - it's puzzling why he isn't mentioned. I'm NOT intimating anything, just an observation.
It sounds like Melissa may have worked twelve hour shifts (7-7). I bet she was pooped after work Tuesday, her first day back. Wish we knew details of what transpired between the time she got off Tuesday night at 7 PM - 6:30 AM when the door record occurs. Less than a twelve hour timeframe. No one has mentioned her cell phone and in all the comments I've seen in various places. I've seen no one mention talking to her that night. Only that she seemed normal at work that day.