Contaminated or compromised. The real key here is to get to the site and to look at the forensic evidence on the skin of the aircraft. President obama called for an immediate ceasefire in eastern ukraine. So a credible International Investigation can get underway. Reporting from washington, karen travers, channel 6 news. Thank you. The local Ukrainian Community is set to gather tonight on the ben franklin parkway to remember the victims in the Malaysia Airlines crash. Chad pradelli is live there now with more. Chad . Shirleen, roughly 100 people are expected to gather here for tonights vigil. It begins at 7 00. There will be flowers, candles, and then a march. The march will begin under the ukrainian flag and ends at the flag of netherlands. We are expressing the range of feelings from shock, sadness, to anger, to terror, to determination that this be stopped. These ukrainian americans have been dealing with turmoil back home for months. Worry has been mounting about loved ones and fri