Obama left for Mexico on May 2nd. On May 1st he had two afternoon meetings in the White House.
At 4pm he met with Kerry, and at 4:30pm he met with Lew. Joe Biden was in the WH all day long. So if you saw VH-3D and VH-60s at WH then they were for them, not for Obama.
USMC KC-130J 167108 BH-108 VMGR-252 'Otis' MCAS Cherry Point
USMC KC-130T 165316 NY-316 VMGR-452 'Yankees' Stewart ANGB
USAF C-17A 05-5141 729th AS March
USAF C-37B 06-0500 99th AS
Sun Country B737-8Q8 N805SY
Miami Air B737-48E N752MA
STAT MedEvac Eurocopter EC145 N698ME