Well it is considered a "Temporary Visa" and for a specialty occupation.

>Generally, a citizen of a foreign country who wishes to enter the United States must first obtain a visa, either a nonimmigrant visa for temporary stay, or an immigrant visa for permanent residence. Temporary worker visas are for persons who want to enter the United States for employment lasting a fixed period of time, and are not considered permanent or indefinite.

https://travel.state.gov/content/travel/en/us-visas/employme...