Just for grins I keep the A124 type up just to see where things are moving. In the last week June 2018 there have been at least 10 flights running a path from. California Logistics, to Kapolei, HI , then Guam, then Dhaka, Bangladesh. What the heck is there that they need such heavy lifting, sometimes 2x a day.
My guess would be wind turbine blades.
Power transformers and generators also come to mind.
It landed in CYOW this weekend. Saw it on my own virtual radar… cool.