Former Navy Seal smashes wingsuit distance record in daring flight

Former Navy Seal smashes wingsuit distance record in daring flight
http://www.foxnews.com/tech/2015/11/...pid=NL_SciTech

One Navy SEAL, one mission, one wingsuit . and a world record gets
smashed at more than 140 mph.

An American veteran, retired U.S. Navy SEAL Andy Stumpf, risked his
life to support the SEAL community and set a global record in a
death-defying feat.

"Stumpf jumped from above 37,265 feet to honor friends and families
of fallen warriors to raise awareness and support for the Navy SEAL
Foundation.
The prior record was 17.83 miles absolute distance traveled in a wing suit
- this "Man on a Mission" travelled 18.257 miles, setting a new world
record.

I was wondering what kind of plane they used.
In one of the follow-ups, I see "Caravan" is mentioned.

from
https://en.wikipedia.org/wiki/Cessna_208_Caravan
"Performance
Maximum speed: 213 mph (343 km/h; 185 kn) true air speed
Cruise speed: 213 mph (185 kn; 343 km/h) true air speed
Stall speed: 70 mph (61 kn; 113 km/h) calibrated air speed
Never exceed speed: 201 mph (175 kn; 323 km/h) indicated air speed
Range: 1,240 mi (1,078 nmi; 1,996 km) with max fuel and reserves
Service ceiling: 25,000 ft (7,620 m)
Rate of climb: 1,275 ft/min (6.48 m/s)
Wing loading: 31.49 lb/sq ft (153.7 kg/m2)"

So, the plane's 25,000 ceiling was souped up to 37,000?
Did they have, in effect, an air-lock? Or de-pressurize the whole plane?