Hank Scorpio who photographed or videoed the cargo copter lifting generator components from Boston Common to the top of the McCormack State Office Building today. Read more.

Sarah Smith got a good, close look at the underside of a helicopter over the Old State House today. She says State Street was closed and that it might have been Life Flight doing some pre-Marathon practice runs.

Earlier:
Checking R2-D2 for background radiation.

Mark Clancy scored a great shot of the National Nuclear Security Administration helicopter today as it flew over part of the Marathon route to take in background radiation levels just in case something happens where that might become important to know.

The copter crew does this every year in the days before the race.

From West Roxbury to Mattapan to Dorchester, people were reporting helicopters tonight, and not just your basic news copters, but big-ass, low-flying behemoths that rattled windows and annoyed the more skittish pets.Read more.

All day long, reports came pouring into Boston Helicopter Central, OK, our Twitter feed, about helicopters overhead: There were helicopters over Boston Harbor for the USS Constitution turnaround, helicopters over I-93 for the procession for Sgt. Johanny Rosario Pichardo to Lawrence.

And then there was the helicopter that just stayed in place, for hours, over Cambridge. Read more.

A weary North End resident filed a complaint at 11:16 p.m. yesterday about helicopters over his or her neighborhood: Read more.

Out on a run this morning, Jason Richardson spotted a Coast Guard helicopter flying in a training mission over the Charles by the Esplanade.

The crew also flew low and loud along Mass. Ave. in Cambridge and Central Square.

Suffolk Construction is seeking city permission to build a helicopter landing pad on what's now a parking lot across from its headquarters on Allerton Street in Roxbury. Read more.

It's part of some training exercise that's been going on this week. Last night, they practiced at the old Radius Hospital in Roxbury. Goes through July 21.