Morning Update: Airlines try out new boarding tactics

Good morning. Can facial recognition – and public shaming – really speed up holiday travel? More on that below, along with Notre Dame Cathedral’s colossal renovation and Canada’s $50-million in Palestinian aid. But first:Today’s headlines

• Canada promised helicopters and more border security in a bid to get Trump to walk back tariff plan
• The search of a Manitoba landfill identifies the most likely location of the remains of murdered First Nations women
• Despite billions in aid from Canada and others, South Sudan’s promised future remains out of reach