Keeping in character, Juan threw the hapless men a mocking salute and firewalled the throttles.

Murph said, It's going to take the better part of the day to clean that up.

Had we waited for him to clear the corner, he would have been suspicious, Mike Trono countered. Better them inconvenienced than us questioned. Juan speaks Spanish like a native, but I get lost with the menu at a Mexican restaurant.

They continued upstream, passing one more boat towing a mass of timber, before the handheld GPS said they were as close to the crash site as the river would take them. After cruising for another quarter mile, they found a small feeder stream, and Juan backed the boat into it. There was barely enough room for the RHIB's hull, and the jungle scraped against the vessel's rubber sides.

Jerry Pulaski tied a line around a moldering stump, and Juan cut the engines. After so many hours of their throaty roar, it took several seconds for Cabrillo to hear jungle sounds through the ringing in his ears. Without being told, the men set about camouflaging the boat, hacking fronds and leaves from different trees and bushes and creating an intricate screen over the RHIB's bow. When they were done, the craft was all but invisible from five feet away.

Well, boys, Juan said as they gathered their communications equipment and other gear together, including a specially made harness for Jerry to carry the plutonium power cell, our leisurely cruise downriver is over. Now the real slog begins. I'll take point. Mike, you've got the drag slot. Keep low and quiet. We have to assume the Argies have their own teams out here looking for the debris, or at least investigating. Stay sharp.

The men, their faces smeared with camouflage greasepaint, looking as fearsome as any native warrior, nodded silently as they stepped from the boat onto the spongy shore. They started inland, following a game trail that ran roughly parallel to the small stream. The temperature was a solid eighty degrees, with the humidity a few notches higher. In just a few minutes, their pores were running like faucets.

For the first mile, Cabrillo felt every muscle cramp and ache from their time in the river, but as they forged on the countless laps he'd swum over the course of his life began to show. He moved more lithely, his boots merely brushing the loamy soil. Even his stump was feeling good. He'd always been more accustomed to wide-open spaces the sea or the desert but his other senses were making up for what his eyes could not see. There was a faint trace of woodsmoke in the air from the logging operation, he knew and when a bird's startled cry carried down from the jungle canopy, he paused and waited to learn what had disturbed it. Was it startled by a predator or by something it saw walking the same path as Juan's team?

The mental acuity required for jungle stalking was as physically taxing as the effort to slide through the dense foliage.

Something off to his left caught Juan's eye. He immediately dropped to a knee, hand-signaling the men strung out behind him to do likewise. Cabrillo studied the spot that had attracted his attention through his machine pistol's iron sights. The quick squirt of adrenaline into his veins seemed to heighten his vision. He perceived no movement, not even a breeze rustling the leaves. This far below the canopy, air movement was a rarity. He cautiously swayed back, changing his angle of view in minute increments.

There.

A dull flash of metal. Not the slick black sheen of a modern weapon trained on him but the pewter shimmer of old aluminum left out in the elements. According to the GPS, they were still several miles from where the power cell was projected to have landed, and he wondered for a moment if this was other debris from the doomed satellite.

Still in a crouch, and with the MP-5 tucked hard against his shoulder, he moved off the trail, confident that what he was taking away from his own peripheral vision would be covered by his men. He approached with the patience of one of the jungle cats. Five feet away, he saw the outline of something large through the undergrowth. Whatever this was, it wasn't part of the doomed orbiter.

He used his weapon's barrel to move aside a clump of vines hanging from a tree and grunted in surprise. They had discovered what looked like the cockpit of a downed plane. The windshield was long gone, and creepers had infiltrated, snaking around seats and bulkheads like a cancerous growth. But what really held his attention was what lay in the copilot's seat. There was little left of the body, just a brown-green skeleton that would soon dissolve into its chair. Its clothing had long since rotted away, but lying in the pelvic girdle and shining brightly in the diffused sunlight was a brass strip that Juan knew had been the guy's zipper.

He whistled softly, and seconds later Mark Murphy and Jerry Pulaski approached. Mike would remain near the trail, watching their six.

What do you think? Juan asked quietly.

Looks like this plane's been here awhile, Jerry said, swatting at a mouse-sized bug that had landed on his neck.

Mark's expression was thoughtful for a moment, and then his eyes widened. This isn't a plane, he said with awe in his voice. This is the Flying Dutchman.

Forgive my ignorance, but wasn't the Dutchman a ghost ship? Pulaski replied.

The Flying Dutchman was a blimp, Mark told him, and pointed. Look between the seats. See that big wheel. That's for controlling a blimp's pitch. Rotate it forward, it engages the elevator on the fin assembly, and she goes nose down. Move it back, and the nose rises.

What makes you think this is the Flying Dutchman and not some lost Navy patrol from World War Two?

Because we're a thousand miles inland from both the Atlantic and the Pacific, and the Flying Dutchman went missing while looking for a lost city in the jungle.

Okay, Juan said. Go back and tell it from the beginning.

Mark couldn't tear his eyes off the airship's shattered gondola. When I was a kid, I kind of had a thing for blimps and zeppelins. It was just a fad, you know, a hobby. Before that, it was locomotives from the Steam Age. Seeing the expressions staring at him, he added, Look, I admit it. I was a geek.

Was? Jerry deadpanned.

Anyway, I read a lot of books about airships, their history. Like the story of the L-8, a Navy patrol blimp that took off from San Francisco in August of 1942. A couple of hours into a routine patrol, the two-man crew reported seeing an oil slick. A couple hours after that, the blimp floated back over the coast, minus the men. The only clue was that two life jackets were missing.

What's that got to do with this? Juan asked a little impatiently. Mark Murphy was the smartest guy Cabrillo had ever met, but with that came his tendency to go off on tangents that highlighted his near-photographic memory.

Well, another lost-blimp story is the Flying Dutchman. I hope I am remembering this right. After the war, a former Navy blimp pilot and some of his buddies bought a surplus airship to use as an aerial platform to fly over the South American jungle in search of an Incan city, most likely El Dorado. They converted the blimp to fly on hydrogen, which is insanely explosive, but it was something they could make themselves using electrolysis.

Treasure hunters? Pulaski asked dubiously.

I didn't say they were right, Mark replied on the defensive. I'm only saying they were real.

This is all well and good, Cabrillo said, backing away from the ruined cockpit and its grisly occupant. I've marked the location on the GPS, but we've got a mission to perform.

Give me five minutes, Mark pleaded.

Juan thought for a second. Nodded.

Murph grinned his thanks. He crawled through the opening where the gondola's door had been ripped off when the airship crashed into the jungle. To his left were the two pilots' seats and controls. To the right was the cabin proper. It had the neat economy and efficiency of a travel trailer. There were two bunk beds, a tiny galley with an electric burner, and a dozen storage lockers. He opened each in turn, rummaged around for any clues, and moved on when all he found were clots of mildew and mold or old surplus mess kits the men must have used to make their meals.