US airlines, United Airlines and Blue Cross Blue Shield are joining forces to expand their joint US operations

US airlines United and Blue Shield Corp. have signed an agreement to expand joint operations across the United States and Canada, and they’re joining forces with Canadian airlines.

United Airlines will provide pilots, flight attendants and flight attendants for the two new joint US and Canadian operations.

United will also take on some of the operational and maintenance duties for the new joint operations.

The airline said it will partner with Canadian Air Travel Association to provide information and support to pilots and flight crews.

The airlines said it would partner with the Canadian National Airlines for additional aviation and logistics support.

United and its Canadian parent, Blue Cross, have faced criticism over safety, and its parent company has recently cut some staff in the wake of the Sept. 11, 2001, terrorist attacks.

United has said it’s investing in safety measures.