Sentence 1: Art was interested in the new airport that was under construction. 
 Sentence 3: There was a barricade blocking the entrance, but he drove around it 
 Sentence 4:  Art almost made it to the runway, when a security guard stopped him 
 Sentence 5:  After being warned about trespassing, Art apologized and drove home 
 Option 1: He drove out to the construction site one weekend. 
 Option 2: He researched the construction plans online one weekend.