A C1/D visa is required for non-US/Canadian citizens. After you are hired and onboarding documents are processed, you will receive a letter of employment and supporting documents to take to the US Embassy for your visa interview. Some countries also require a visa for certain nationalities.
Yes. A pre-employment physical examination is required prior to commencing employment. This can include a drug test, blood tests and a chest X-ray. Your medical certificate is generally valid for two years from the date of your examination, covering you for follow up assignments.