He also noticed something that made him respect her.
Whenever a new worker arrived, Marlene explained the purpose of each task.
She didn't simply order people around.
She wanted them to understand why a planting row followed a certain contour, why some areas were left undisturbed, and why damaged plants were documented rather than quietly discarded.
One afternoon, Daniel asked why she cared so much about measurements.
Marlene handed him the green notebook.
He began reading.
After several minutes, he looked up.
"Your dad wrote all this?"
She nodded.
"Twenty years."
Daniel turned another page.
Then looked toward the hills.
"That's a man who paid attention."
Marlene smiled sadly.
"Yes."
Daniel closed the notebook.
Then said something she'd never forgotten.
"Well, we'd better make sure somebody keeps paying attention."
The first serious threat to the expanding cactus fields came from a wildfire.
It was late June 2006, and the region had experienced several weeks of hot, windy weather. A grassfire began on land several miles west of the Caldwell ranch and spread quickly through dry vegetation. By afternoon, smoke was visible above the ridge, and volunteer firefighters were warning property owners to prepare for changing conditions.
Marlene stood beside the barn watching the dark plume.
Daniel approached carrying a radio.
"Wind's shifting."
She nodded.
"I see it."
The cactus itself wasn't a magical fire barrier.
Dry grass, brush, and other vegetation growing between planting sections could still carry flames, and the surrounding fences and buildings remained vulnerable. But Marlene had maintained access lanes and vegetation buffers as part of her management plan, which provided practical areas for fire crews to move and helped reduce fuel in some portions of the property.
She followed the safety guidance given by the local responders.
Equipment was moved away from exposed areas.
Workers were accounted for.
Animals and fuel supplies were secured where appropriate.
And when the fire crew requested access to one of the ranch lanes, Marlene opened the gate immediately.
The fire reached the neighboring ridge before the wind eased.
Several fences were damaged.
A storage shed on another property burned.
And portions of dry pasture were scorched.
The Caldwell ranch suffered losses along its western boundary, including several young cactus sections and damaged fencing. But the main planting areas remained largely intact, and Marlene was able to begin repairs once the land was safe.
She didn't celebrate.
The neighboring ranches had been hurt.
Rosa lost part of an outer fence.
Travis Pike lost a small equipment shelter.
And Roy Mercer's son suffered a minor injury while helping move machinery away from the fire.