A few days ago some reporter on MSNBC (I think) mentioned in passing that Clinton spent $50k on Guam. He was making the point that her campaign was still working to maximize delegates and hadn't totally pivoted to the general. Not sure what they spent it on or if Sanders spent anything.
If true, that would be completely nonsensical. 50k in Guam and $0 in Indiana?
$50K in Guam is a much better investment. It would have taken a couple million to move the needle in Indiana, $50K in Guam has the potential of flipping the race.