A six-day-old US pier project in Gaza is starting to get more aid to Palestinians in need but conditions are challenging, US officials said on Thursday. That reflects the larger problems bringing food and other supplies to starving people in the besieged territory. The floating pier had a troubled launch, with crowds overrunning some of the first trucks coming from the new US-led sea route and taking its contents over the weekend. One man in the crowd was shot dead in still-unexplained circumstances. It led to a two-day suspension of aid distribution. The US military worked with the UN and Isr…