In Jerusalem [King Uzziah] made engines, invented by skillful men, to be on the towers and the corners, to shoot arrows and great stones. And his fame spread far, for he was marvelously helped, till he was strong. - II Chronicles 26:15 (ESV)Interesting comment on God's perspective on the application of technology for warfare. I say so because this verse is in the "Good Stuff that Uzziah Did" section. It is a good thing for us to design and build more effective devices for warfare. But note that the ones Uzziah commissions are to be put on the towers of the city - for defense and the protection of the people.
The "Bad Stuff" immediately follows this verse, describing his pride in feeling strong. Certainly a warning against trusting in those powerful military devices. And, I think, a lesson for us engineers - design technology for the good of people, yet do not trust in the technology to save you.