U.S. Army Sergeant Lucy Richter locked the door of her old Greenwich Village co-op and headed into the bedroom, where she stripped off her dark green uniform, bristling with perfectly aligned bars and campaign ribbons. She wanted to toss the garment on the bed but, of course, she hung it carefully in the closet, the blouse too, and tucked her ID and security badges carefully in the breast pocket, where she always kept them. She then cleaned and polished her shoes before setting them carefully in a rack on the closet door.

A fast shower, then, wrapped in an old pink robe, she curled up on the shag rug on the bedroom floor and gazed out the window. Her eyes took in the buildings across Barrow Street, the lights flickering between the windblown trees and the moon, white in the black sky, above lower Manhattan. This was a familiar sight to her, comforting. She used to sit here, just like this, when she was a little girl.

Lucy had been out of the country for some time and was back home on leave. She’d finally gotten over the jet lag and the grogginess from a marathon sleepfest. Now, with her husband still at work, she was content to sit, look out the window and to think about the distant past, and the recent.

The future, too, of course. The hours we have yet to spend seem to obsess us far more than those we’ve already experienced, Lucy reflected.

She grew up in this very co-op, here in the most congenial of Manhattan neighborhoods. She loved the Village. And when her parents moved across town and became snowbirds they transferred the place to their twenty-two-year-old daughter. Three years later, the night her boyfriend had proposed to her, she’d said yes but with a qualification: They had to live here. He, of course, agreed.

She enjoyed her life in the neighborhood, hanging out with friends, working food service and office jobs (a college dropout, she was nonetheless always the sharpest and hardest worker among her peers). She liked the culture and the quirkiness of the city. Lucy would sit right here, looking out the window, south, at the imposing landscape of this imposing city, think about what she wanted to do with her life or think about nothing at all.

But then came that September day and she watched it all, the flames, the smoke, then the horrible absence.

Lucy continued her routine, more or less content, and waited for the anger and hurt to go away, the emptiness to fill. But they never did. And so the skinny girl who was a Democrat and liked Seinfeld and baked her own bread with organic flour walked out the front door of this co-op, took the Broadway train uptown to Times Square and enlisted in the army.

Something, she’d explained to her husband, Bob, she had to do. He’d kissed her forehead, held her hard and didn’t try to talk her out of it. (For two reasons. First, a former Navy SEAL, he thought the military experience was important for everyone. And second, he believed Lucy had an unerring sense of doing the right thing.)