If you are planning to travel outside the US during your first year, your DS 2019 will need a travel signature.  You will also need to check if you need visa to enter the country you intend to visit.  Obtaining a tourist visa is solely the responsibility of the au pair.

~Three weeks before you plan to travel, mail your original DS-2019 Form and a self-addressed stamped envelope (so your signed DS 2019 may be returned to you) to:

Au Pair in America
River Plaza
9 West Broad Street
Stamford, CT 06902
Attn.: Evelyn Blum

Have a great trip!