Annotate this passage for me pls -
daddy flashed his badge, and we sailed through to a campus of perfectly straight parallel streets lined from one end to the other by unremarkable two-story redbrick buildings. only the giant hypersonic wind tunnel complex—a one-hundred-foot ridged silver sphere presiding over four sixty-foot smooth silver globes—offered visual evidence of the remarkable work occurring on an otherwise ordinary-looking campus.

building 1236, my father’s daily destination, contained a byzantine complex of government-gray cubicles, perfumed with the grown-up smells of coffee and stale cigarette smoke. his engineering colleagues with their rumpled style and distracted manner seemed like exotic birds in a sanctuary. they gave us kids stacks of discarded 11×14 continuous-form computer paper, printed on one side with cryptic arrays of numbers, the blank side a canvas for crayon masterpieces. women occupied many of the cubicles; they answered phones and sat in front of typewriters, but they also made hieroglyphic marks on transparent slides and conferred with my father and other men in the office on the stacks of documents that littered their desks. that so many of them were african american, many of them my grandmother’s age, struck me as simply a part of the natural order of things: growing up in hampton, the face of science was brown like mine.

my dad joined langley in 1964 as a coop student and retired in 2004 an internationally respected climate scientist. five of my father’s seven siblings made their bones as engineers or technologists, and some of his best buddies—david woods, elijah kent, weldon staton—carved out successful engineering careers at langley. our next-door neighbor taught physics at hampton university. our church abounded with mathematicians. supersonics experts held leadership positions in my mother’s sorority, and electrical engineers sat on the board of my parents’ college alumni associations. my aunt julia’s husband, charles foxx, was the son of ruth bates harris, a career civil servant and fierce advocate for the advancement of women and minorities; in 1974, nasa appointed her deputy assistant administrator, the highest-ranking woman at the agency. the community certainly included black english professors, like my mother, as well as black doctors and dentists, black mechanics, janitors, and contractors, black cobblers, wedding planners, real estate agents, and undertakers, several black lawyers, and a handful of black mary kay salespeople. as a child, however, i knew so many african americans working in science, math, and engineering that i thought that’s just what black folks did.

my father, growing up during segregation, experienced a different reality. “become a physical education teacher,” my grandfather said in 1962 to his eighteen-year-old son, who was hell-bent on studying electrical engineering at historically black norfolk state college.