Here are some concepts: provide, security, simulate

What is a sentence about these concepts?

Sentence is below.
marines provide security while armed force confirm a simulated

Here are some concepts: run, stream, wood

What is a sentence about these concepts?

Sentence is below.
the stream running through the woods is sometimes frozen by this time of year .

Here are some concepts: aircraft, equipment, load

What is a sentence about these concepts?

Sentence is below.
a soldier loads his aircraft with medical supplies and other equipment on the tarmac .

Here are some concepts: bike, gym, pedal

What is a sentence about these concepts?
Sentence is below.
The bikers are pedaling stationary bikes in the gym.