Puerto Rico's air monitoring network is short of staff, the Department of Natural and Environmental Resources states, with only one field technician, one maintenance worker and two statisticians on the job. ^[1] Two regions are out of compliance with the federal sulfur dioxide air quality standard: San Juan and Guayama-Salinas. ^[2] The department's own account places the monitoring work behind those compliance findings in the hands of a single field technician. What the numbers do not spell out is how one technician covers an island-wide network, or how understaffing bears on the two regions already flagged. The facts name the staffing and name the violations; they do not connect the two. That is a question worth putting to the agency.