Bash & blocking processes

Question

Could you help me with the Bash syntax to achieve the following?

1. Run a blocking process without blocking execution of the rest of the script.
2. Run a standard "non-blocking" process (e.g. lsof).
3. "Rejoin" the blocking process so that ^C will stop that process, then end execution of the script.

Answer 1

Is this an idiomatic way to do it?

#!/bin/bash
function handle_int()
{
    kill $BCPID
    exit
}
trap handle_int INT

blocking_command &
BCPID=$!

non_blocking_command
wait

Answer 2

# script
command &
# more script
wait