The Waitt Institute's flight re-construction team talks with Ken Kalstad about the Electra 10-E. Photo Credit: Liz Smith

Aviation expert Ken Kalstad introduces the Waitt research team to the Electra-10E. Photo Credit: Liz Smith

An original Electra 10-E modified to look exactly like Amelia Earhart's Electra. Photo Credit: Liz Smith

The view from an Electra 10-E cockpit. Photo Credit: Liz Smith

The cockpit of an original Electra with some modern modifications. Photo Credit: Liz Smith

Flight accident investigators Michael DiBello and Christopher Nutter in the cockpit of an Electra 10-E. Photo credit: Liz Smith

The cockpit of an original Electra with some modern modifications. Photo Credit: Liz Smith

Flight accident investigators Michael DiBello and Christopher Nutter look over the modified Electra 10-E. Photo credit: Liz Smith

The first target of the CATALYST 2 expedition turned out to be a rock formation (5,389m depth).

The second target of the CATALYST 2 expedition turned out to be a rock formation (4,570m depth).

The second target of the CATALYST 2 expedition turned out to be a rock formation (4,570m depth).

Target #4 from the CAT 2 expedition was a 60-gallon metal drum (5290 meters deep).

The fifth target of the CATALYST 2 expedition was a pipe approximately 30 feet long and 1 foot in diameter (5,251m depth).

Target #3 from CATALYST 2 appears to be a chain or metal pipe at 5,283 meters deep.

Howland Island, where Amelia Earhart planned to land on July 2nd, 1937 but never arrived. Photo Credit: Stephani Gordon

Howland Island, where Amelia Earhart planned to land on July 2nd, 1937 but never arrived. Photo Credit: Stephani Gordon

The Waitt Institute team heads out to Howland Island in the helicopter to photograph the search for the island from Amelia Earhart's perspective. Photo Credit: Stephani Gordon

Howland Island from 7 miles away at an altitude Amelia Earhart would have been flying at. Photo Credit: Stephani Gordon

The CATALYST AUV engineers take a look at Ginger's thruster. Photo Credit: Stephani Gordon

The film crew jumps in the RHIB to get some underwater shots of Ginger during a recovery. Photo Credit: Mike Kasic

The film crew heads out to shoot underwater video of Ginger during a recovery. Photo Credit: Mike Kasic

The film crew takes the RHIB out to get underwater shots of the AUVs. Photo Credit: Mike Kasic

Underwater cinematographers Stephani Gordon and Ian Kellett get in the water with Ginger. Photo Credit: Mike Kasic

Steph Gordon and Ian Kellett shooting video of Ginger during a recovery. Photo Credit: Mike Kasic

A hot sonar target from the seafloor. Photo Credit: Stephani Gordon

Sonar data from the seafloor - the black line in the middle is the AUV's path with sonar on the left and right of the vehicle's track. Photo Credit: Stephani Gordon

Videographer Stephani Gordon sets up a camera for a POV shot of the AUV's deployment. Photo Credit: Mike Kasic

Sound recordist, Mike Kasic, gets good sound on the AUV's deployment. Photo Credit: Stephani Gordon

Another beautiful sunset at sea. Photo Credit: Liz Smith

Crew member Kim Heine gets ready to fire the grap gun during a recovery. Photo Credit: Liz Smith

HBOI's Phil Santos keeps an eye on Mary Ann while she surveys deep below. Photo Credit: Liz Smith

AUV Engineer Greg Packard works on a technical issue. Photo Credit: Liz Smith

Sam Guse horses around while spraying down the AUV with fresh water. Photo Credit: Liz Smith

HBOI's Frank Lombardo works on swapping Ginger's batteries between missions. Photo Credit: Liz Smith

AUV operator Sam Guse takes notes on Ginger's latest position at depth. Photo Credit: Liz Smith

AUV engineer, Brennan Phillips, enjoys his freshly made midnight donuts. Photo Credit: Liz Smith

Kim Heine - cook by day, donut-maker by night. Photo Credit: Liz Smith

The CAT 2 team gathers to view the first images from the bottom of Target #4. Photo Credit: Liz Smith

Sonar analyst Andy Sherrell looks through new data for possible targets. Photo Credit: Liz Smith

Greg Packard and Andy Sherrell look through new photos of a possible target. Photo Credit: Liz Smith

AUV engineer, Greg Packard, and sonar analyst, Andy Sherrell, go over recent sonar data from the seafloor. Photo Credit: Liz Smith

The CAT 2 team was treated to georgous sunsets almost every night of the 3 month expedition. Photo Credit: Liz Smith

Media producer Liz Smith helps make midnight donuts for the CAT 2 team. Photo Credit: Kim Heine

Kim Heine fills the freshly fried donuts with cherry pie filling. Yummy! Photo Credit: Liz Smith

CAT 2 researcher, Dave Wheeldon, enjoys a freshly-made donut. Photo Credit: Liz Smith

AUV engineer, Brennan Phillips, and Captain George Gunther go cuckoo for hot donuts. Photo credit: Liz Smith

HBOI's Frank Lombardo stands by at the grap gun for an AUV recovery. Photo Credit: Liz Smith

AUV operator Sam Guse keeps an eye on Ginger while the team prepares for her recovery. Photo Credit: Liz Smith

Frank Lombardo watched the AUV while Sam Guse ties off a line. Photo Credit: Liz Smith

WHOI AUV operator runs the LARS as Mary Ann comes back on board. Photo Credit: Liz Smith

Mary Ann, the AUV, returns from a successful mission. Photo Credit: Liz Smith

Woods Hole AUV engineer, Brennan Phillips. Photo Credit: Liz Smith

Frank Lombardo releases Mary Ann from the LARS docking head before she is pulled into her van. Photo Credit: Liz Smith

AUV engineers Brennan Phillips and Mark Dennett bring Mary Ann back on board. Photo Credit: Liz Smith

AUV operator Samantha Guse operates the tugger winch. Photo Credit: Liz Smith

AUV operators Sam Guse and Frank Lombardo prepare Mary Ann for another dive while Bob "Yogi" Elder monitors Ginger on the AUV monitor. Photo Credit: Liz Smith

The AUV day crew: Mark Dennett, Sam Guse, Frank Lombardo, Yogi Elder, and Brennan Phillips. Photo Credit: Liz Smith

The AUV day crew removes Ginger's tail section. Photo Credit: Liz Smith

Woods Hole AUV engineer, Greg Packard, checks out Mary Ann's thruster housing. Photo Credit: Liz Smith

AUV engineers Greg Packard and Brennan Phillips take a look at Ginger's tail section after a failed mission. Photo credit: Liz Smith

Media producer Liz Smith and AUV operator Neil McPhee face off in the Mother's Day ping pong tourney. Photo Credit: Kim Heine

Crew member, Kim Heine, updates the leaderboard for the ping pong tourney. Photo Credit: Liz Smith

Brennan Phillips gets his game on in the CAT 2 ping pong tourney. Photo Credit: Liz Smith

The CATALYST 2 team, leg two. Photo Credit: Liz Smith

R/V Seward Johnson crew member Bob McMillen gets into the game during the CAT 2 ping pong tourney. Photo Credit: Liz Smith

The CAT 2 team watches a match during the semi-finals of the Mother's Day ping pong tournament. Photo Credit: Liz Smith

The team prepares an AUV on the LARS for launch. Photo Credit: Liz Smith

The CAT 2 team uses the Launch and Recovery System (LARS) to slowly lower one of the AUVs into the water. Photo Credit: Liz Smith

The WHOI AUV team takes a closer look at Mary Ann's thruster housing. Photo Credit: Ian Kellett

Andy Sherrell looks through the latest sonar data while Mark Dennett monitors the AUVs. Photo Credit: Ian Kellett

Underwater cinematographer Stephani Gordon shoots video of Ginger during a recovery. Photo Credit: Ian Kellett

Ginger floats just off the R/V Seward Johnson's starboard side while waiting to be recovered. Photo Credit: Ian Kellett

Ginger floating at the surface. Photo Credit: Ian Kellett

The CAT 2 team brings Ginger out of her van for a deployment. Photo Credit: Stephani Gordon

The R/V Seward Johnson motors to a drop point with an AUV waiting to be launched on the back deck. Photo Credit: Stephani Gordon

An AUV streams behind the R/V Seward Johnson during a launch sequence. Photo Credit: Stephani Gordon

The R/V Seward Johnson on site for CATALYST 2 near Howland Island. Photo Credit: Stephani Gordon

The R/V Seward Johnson motors to a deployment location. Photo Credit: Stephani Gordon

Videographer Stephani Gordon gets aerial shots of the R/V Seward Johnson and an AUV deployment. Photo Credit: Ian Kellett

Videographers Ian Kellett and Stephani Gordon. Photo Credit: Mike Kasic

HBOI's Gregg Diffendale and researcher Dave Wheeldon enjoying their ice cream cones. Photo Credit: Liz Smith