For a long time at least, the Marines didn't have a problem understanding how important their Reconnaissance assets were, including forward elements, aviation, ELINT, SIGINT, all blended to provide the MAGTF Commander with a balanced picture of what was going on.
Imagery is great, but will never be a substitute for human assets in the area.
A case in point comes to mind from Bosnia right before they were going to annihilate one particular Serbian trucking and staging hub.
Right as the 3 hour Operations briefing came to an end, a British enlisted guy from the Det wearing a civilian blue coat and a beard raised his hand, saying, "Mind if I have a moment before we go?"
He grabbed the laser pointer, and began to detail every single vehicle in the imagery they had on the screen, calling out trucks, how many troops were in each one, what they were there for, and every tiny detail of the area.
"Dis wun 'as the band. Un raaught ere, 'is wun's full of alcohol for the partee."
"Basically, General Karadzic's daughter is having a wedding party in the target building, and all these vehicles and troops are here to support it."
An astonished and highly offended desk jockey USAF officer who conducted the briefing stared daggers at this dirty UK coalition member, and demanded,
"How would you know any of this?"
Det: (Grinning widely) "I took a cab there an asked em 'whatchu upto round here?', and they told me."
USAF Desk Jockey: "Do you realize how many millions of dollars we have spent on this operation so far?"
Det: "No, don't really care really. It's a wedding party."