CHARLOTTESVILLE, Va. (WUSA9) -- Day 25 of the search for missing University of Virginia student Hannah Graham brought out a new tool - a helicopter from the Department of Homeland Security.

But Wednesday's search, like many of the 24 before it, yielded little results.

Everyday, searchers head out to pick through, scour and search in an eight-mile radius from the spot on the Downtown Mall where Hannah Graham was last seen. Wednesday, many were on horseback.

MORE: Police won't give up search until Hannah Graham is found

Retired nurse Brenda Saunders of Piedmont Search and Rescue came from Richmond.

"I'm a mother so if it was my child out there I'd want everybody out looking too," said Saunders.

The beautiful rolling hills in Earlysville, the northern-most edge of the search area, and the calm of the horses are a sharp contrast to the grim task ahead.

MORE: Parents of missing U.Va. student ask for information

Up to 50 searchers on foot, ATV and in the air scoured the search area. Thursday, searchers will get a boost when the results of last's weekend flyover with a special high-resolution camera provided by BAE Systems arrives.

"Once we get that data and we go through it, our hope is that we will see things through this that we will not be able to see before. Our hope is that we'll find something to follow up on," said Mark Eggeman, VDEM.

Panorama Farm was also searched Wednesday Steve Murray owns it.

"I expect that she'll be found but they searched a long time and haven't found anything I'm sure that people are getting discouraged," said owner Steve Murray.

But 250 notes written by classmates of Hannah Graham are lifting spirits. The notes, which thank searchers, were dropped off to Charlottesville Police Chief Tim Longo.

"These are the unsolicited acts of kindness that that keep people showing up there every morning at 8 o'clock," Longo said.

Police say they hope to cover the entire eight mile radius by the end of the week. That's 200 square miles.

The tip line is 434-295-3851 and email is