I heard a caller on the radio say there are gun shows in Vegas all the time, and nobody would even look twice at baggage like that.
Anyone who thinks it was hard for him to get all that gear up there in 3 days has never been in Vegas around NAB conference time. Thousands of camera crews descend on Vegas, all wheeling giant boxes of camera and lighting equipment to their hotel rooms. No one stops them, or checks them, or even gives them a second look. Same with CES. A guy wheeling giant pelican cases up to his hotel room in Las Vegas would draw 0 suspicion from anyone on the hotel staff.
How soon we forget Terry Nichols.
Oklahoma city bomber was working alone.