The first obstacle comes in the form of the Hawks.

The first obstacle had come in the form of the Enterprise's main computer.

By the time an obstacle comes into view, there is not enough distance to stop.

Other obstacles come in the form of simple prison logistics.

Strange, Charles thought as the obstacle in front of him came into focus.

But the main obstacle to their dominating the information market may come from the companies themselves.

The first obstacle comes after next week when Congress will recess for four weeks.

A major obstacle, they say, comes even in defining what it is to be.

The difference in their ages makes them a little nervous, but the more serious obstacle comes from David's family.

The obstacle has shifted course along with us, and is still coming straight at the ship.