Flags of spacefaring nations...

who went to this asteroid (a rare one that dances in an orbit with another, at top) still includes the American flag.

The principal resources to be found were thought to be water first and foremost, but also nickel-iron, platinum-group metals, hydrogen, oxygen and sulfur bearing minerals, dirt (regolith), and many other things.

Ms. Lee's images shows each of these have immense value in space- so NEOs can be seen as depots of resources waiting to be utilized.