Understanding that high-speed rail (HSR) could provide millions of Americans with a cleaner, more efficient way to travel, President Barack Obama allocated $13 billion to its development over the next five years as part of the American Recovery and Reinvestment Act (ARRA) passed in February.

“Airshow China,” the huge aerospace trade show that’s known officially as the “China International Aviation and Aerospace Exhibition,” ended Sunday in the southern-coast city of Zhuhai. It was the seventh time the event has been held.