Day now faced a problem that had defeated many escape attempts throughout military history.
Getting outside the prison was only the first step.
He still had to cross enemy territory.
The obvious direction was south.
Somewhere below him lay the demilitarized zone dividing North and South Vietnam.
Beyond it were American and South Vietnamese forces.
The distance was not enormous when measured on a strategic map.
For a barefoot, injured man trying to avoid capture, it might as well have been another continent.
Day began moving.
His right arm could not help him normally.
Pain accompanied every difficult movement.
Vegetation tore at his skin.
He had to avoid populated areas.
Travel during daylight increased the chance that someone would see him.
Travel at night made navigation more difficult.
The jungle contained no signs directing escaped American pilots toward safety.
He needed water.
He needed food.
Most importantly, he needed not to be seen.
A conventional military unit can solve many of these problems through logistics.
Food arrives from supply lines.
Medics treat injuries.
Maps and compasses guide movement.
Radio operators request support.
An escaped prisoner has none of those advantages.
The body itself becomes the supply system.
Whatever can be found becomes food.
Whatever rain falls becomes water.
Every remaining calorie becomes precious.
Day survived on what the country provided.
He ate berries.
He caught and ate frogs without cooking them.
Raw frogs were not an adventurous survival exercise.
A fire could reveal his position.
Smoke could be seen.
Light could be seen at night.
The smell of cooking might attract someone nearby.
Food therefore had to be consumed without the normal comfort of preparation.
Hunger eventually makes arguments about taste meaningless.
Day kept moving south.
He knew American forces existed somewhere ahead.
He did not know whether he would reach them.
Behind him, the people who had held him prisoner knew one important fact.
Their prisoner was gone.
The escape was no longer secret.
Somewhere, searches could begin.
Day had gained distance.
He had also started a race.
Every mile south brought him closer to friendly territory.
Every hour gave searchers another chance to discover his trail.
The most remarkable phase of his escape had begun.
[End of Part One]
Part Two โ Five Days of Captivity Became a March South
Dayโs condition should have made rapid movement impossible.
Instead, he turned movement into his only chance of survival.
He could not remain near the prison camp.
Even the best hiding place would eventually become dangerous if search parties concentrated in the area.
Distance was therefore a form of protection.
He needed to put terrain between himself and his captors.
The problem was that distance also consumed strength.
Every step demanded energy that he could not easily replace.
The right arm broken in three places complicated nearly everything.
Climbing became harder.
Crawling became harder.
Crossing rough ground became harder.
If he fell, protecting the injured arm while stopping himself with the other hand became almost impossible.
He could not simply march down a road.
Roads belonged to soldiers, civilians, trucks, and patrols.
He needed routes less likely to be watched.
Those routes were naturally more difficult.
Vegetation slowed him.
Streams had to be crossed.
The geography itself became an enemy.
Day later became famous for the sheer determination of this escape, but determination does not eliminate physiology.
He became weaker.
Hunger accumulated.
Sleep became difficult because remaining in one place too long felt dangerous.
He had to balance two opposing needs constantly.
Move fast enough to avoid recapture.
Rest enough that his body did not collapse.
A healthy soldier with equipment would have struggled.
Day was injured, hungry, and alone.
His survival depended partly on one advantage his captors could not completely remove.
He understood military movement.
Years of experience had taught him that the obvious route is often the watched route.
He knew concealment mattered.
He knew noise mattered.
He knew the difference between moving quickly and moving carelessly.
The escape was not simply an endurance contest.
It was an extended attempt to remain unnoticed in a landscape filled with people who could end the journey instantly.
Small mistakes became dangerous.
A broken branch.
An exposed silhouette.
A poorly chosen crossing point.
A few seconds on an open trail.
Any of them could attract attention.
Day also had another problem.
He did not possess perfect knowledge of his own location.
Pilots navigate enormous distances using instruments and maps.