I keep thinking about the empty chair in the living room. Not her actual chair, you understand, the one with the throw blanket that smells faintly of cinnamon and whatever those sweet, brightly colored cereals are called now. That’s still there. I mean the abstract space, the absence that now hangs in the air like a poorly tuned radio frequency. My sister, bless her heart, moved into supported living last week. It was... necessary. The professionals, they call it “optimizing her environment for sustained well-being.” I just know she’s not here. The quiet is what’s got me. For twenty-two years, my days have been an intricate choreography around her needs, a series of precisely timed interventions. Medication at 0700, breakfast by 0730, ensuring the right cartoon was on, anticipating the meltdowns before they could breach critical mass. It was a tactical operation, every single day. The discipline from my Corps days came in handy, I suppose, that focus on mission parameters and contingency planning. Now, the mission has been redeployed, and I’m standing in the empty armory, my gear neatly stacked, waiting for orders that aren't coming. Is that a common civilian experience? This sudden, gaping maw where routine used to be? It feels… unmoored. I’m supposed to be ecstatic, I know. My friends, those well-meaning civilians who probably think "PTSD" is just a character in a first-person shooter game, keep saying things like, "Now you can finally LIVE!" "Think of the freedom!" They don’t understand. Freedom, to me, has always been a concept tied to operational objectives, not this amorphous, shimmering thing they speak of. I went to community college specifically because it allowed me to maintain the regimen, the tight schedule that accommodated everything else. Now, I have these large, undefined blocks of time. It’s like being given a map with no destination marked. Yesterday, I just sat there. At my desk, my textbooks open to "Introduction to Abnormal Psychology," trying to memorize the criteria for a generalized anxiety disorder, and all I could focus on was the profound stillness of the house. No sudden bursts of laughter, no specific demands for a particular snack, no clatter of her reaching for something just out of reach. It was a sensory deprivation tank in my own home. I found myself checking my phone every ten minutes, not for a message, but for some phantom alert, some ghost of a task. It’s almost a somatic response, a muscle memory of constant vigilance. My body still expects the alarm to sound, even though the threat has been neutralized. I tried to study, I really did. But my concentration felt like a sieve. Every ten minutes I’d drift, thinking of some small thing, some particular way her hair would fall, or the exact phrasing she’d use for a request. It’s not grief, not exactly. It’s more like… an amputation of a phantom limb. The limb is gone, but the nerve endings still fire, convinced it’s still there, still needing to be flexed and managed. It’s exhausting, this internal combat. And frankly, a bit ridiculous. I’m 76 years old, for heaven’s sake, and I’m wrestling with the existential ennui of a twenty-something with an empty nest. My younger self, the one who navigated active combat zones, would probably look at me now and roll her eyes. She wouldn't have understood this peculiar kind of disorientation.