Honesty is always the best policy with this question, and it always puts a bit of a fire under a recruiter if they're aware that you're actively looking for another position. Feel free to talk with the interviewer about your search so far and don't hesitate to let them know that a role with Johnson & Johnson is at the top of your wishlist. Keep an organized folder with every customized resume and cover letter you've submitted to each position you are interviewing for. The interviewer will have something similar for all the applicants they are interviewing. Have tabs separating your notes for each interview, with a breakdown of the pro and cons of each employer. Detail, for your eyes only, what each of them offers you and what you offer them. Having this with you will show that you are an organized professional taking all your prospects seriously. This will help market you as a viable candidate.

"I've never been the type of person who puts all of their eggs in one basket. I am interviewing with several companies and am keeping notes on all those I've been interviewed for, comparing each one to see how well they align with my goals and objectives. I'm interested in finding the right lasting fit. It's all about being professional and respecting the time and efforts of everyone who contributes to the process."