The proposed activity and authorization should be reviewed before the assignment begins. A commercial deadline does not replace the evidence requirements.
Identify the records that control readiness
Confirm the foreign employment chronology, customer arrangement and technical support material. If the company cannot yet explain why its knowledge is required, rushing travel leaves a substantive issue unresolved. Keep the requested start date visible while distinguishing it from permission to perform the US work.
A specialized-knowledge case built around a company's own welding procedure specifications requires pulling together internal documents that were not created with an immigration filing in mind, which usually takes longer than compiling a certification list and job description. The realistic preparation window covers assembling contemporaneous technical records, confirming the ownership chain between the two organizations, and verifying that the continuous qualifying year is unbroken on the payroll as it actually ran rather than as it is remembered. When the beneficiary will be stationed primarily at an unaffiliated third-party site, the client must not principally control and supervise the beneficiary, and the placement must relate to a product or service requiring petitioner-specific specialized knowledge rather than supply labour for hire.