I was told that it was impossible to do because even though we had the rolling stock, we did not have the ability to deal with a union that had the opportunity to charge double time, triple time and all kinds of things on a train that was going across the country for two or three days.
The union had grown and expanded over 15 years.
( z1 and :op ( z2 grow :ARG1 ( z3 union ) ) :op ( z4 expand :ARG1 z3 ) :duration ( z5 temporal-quantity :quant 15 :unit ( z6 year ) ) )