BOMBARDIER workers in Northern Ireland will “flex their muscles” to save thousands of jobs if a trade ruling goes against the aircraft manufacturer, a union leader warned today.

“As workers we won’t be collateral damage in a trade war,” stormed Unite regional officer Susan Fitzgerald. “We demand political action at the eleventh hour.”

The US plans to impose duties of 292 per cent on imports of Bombardier’s C Series jets, following a complaint by US aircraft and arms giant Boeing.