usually polo or v-neck shirt, jeans, and tennis shoes but the attire ranges from slacks+button down to tshirt, shorts, and sandals
one of the guys at work is a big fan of teva sandals plus white socks, I guess when you get old you can wear whatever you want
tie or jacket, forget it, this is Phoenix in the summertime, still 100 F at 10 pm..
intern for major semiconductor company