Kaylee understood that sentiment. She knew that the firefly class ships were likely to run forever. Parts were cheap and with regular maintenance, they'd stay in the skies until they let her down. They were good, hearty ships and she liked it that way. She unintentionally squeezed his arm in excitement, looking around like a kid in a candy store and pointed some odd direction asking what a particular piece of machinery was. None of it looked familiar so everything needed an explanation. After she'd gotten enough information to satisfy her she finally asked, "How fast she run?"