Mountaineers do it showing excellent technique on the peak. Movie Stars do it on film Musicians do it with rhythm. Mussourgsky does it at an exhibition. Nobel laureates do it in the bank. Nonsmokers do it without huffing and puffing.
Nurses do it with patience.
Nurses call the shots. Oceanographers do it down under. Operators mount everything. Orthodontists do it with braces. Oscillators do it repeatedly.